RESPONSE 1

Respond to at least two colleagues by doing all of the following:

• Offer an analysis of their evaluations and subsequent      recommendation. Note both strengths and areas that could be improved. 
• Identify areas where your own original recommendations or      evaluation was similar to or different from your colleagues’ original      evaluation and explain why.

Colleague 1: Kamran

Chris the social worker and her team of caseworkers are using a strategy that blends elements of geriatric case management with short-term treatment methods, they are primarily using the solution-focused and task-centered models. As part of their continuous practice, the team regularly conducts practice evaluations.  To evaluate its practice approach, the team used a multiple-baseline, single-subject design. Each of the full-time case managers on the team selected one client new to the caseload to participate in the study. The research project is explained to clients by their respective case manager and sign informed consent paperwork in order to participate. As part of the practice process, the case manager uses clinical rating scales that are adapted from the task-centered model. At the beginning of each client meeting, the case manager and client collaboratively evaluate how well the practice steps or tasks that are undertaken by the client and/or case manager were completed using a 10-point clinical scale. While concurrently, they evaluated changes to the respective client problems, also using a 10-point clinical scale (Plummer Makris & Brocksen, 2014b).

The outcome of Chris’s study with her client George would lead me to adopt this model of case management with solution focused and task-centered approaches because the basic logic underlying single subject research (SSR) is straightforward. Data on the behavior of interest which is collected over a period of time until the baseline rate is clearly established.  The intervention then introduced as data continue to be collected. Repeated measurement of the dependent variables over a period of time, is central to SSR. being accurate with high levels of control and validity (Mattaini, 2010). Also, Chris and her team met many quality indicators, that must be present and adequately addressed for a study to be a credible example of single-subject research which includes a description of participants and setting, dependent variable, independent variable, baseline, experimental control/internal validity, external validity, and social validity (Tankersley, Cook, & Cook, 2008). Chris and her team are doing clinical practice research by using a single-subject design because they are fairly easy to implement and can provide very useful information on a case level. While their empirical strength is often considered weak, their applicability and usefulness make them a good method for clinical practice and, if following multiple baseline designs, they can provide good research data as well (Plummer, Makris & Brocksen, 2014b).

I believe that Chris and her team’s research and the data that they recorded in the study and outcomes are adequate to be considered as evidenced-based research in order to support some types of programs. If Chris and her coworkers wanted to submit the study to an evidence-based practice registry, they may be required to develop and add an evaluation segment to their documentation. Other factors that Chris’s team should consider is how individuals with certain characteristics will respond to the intervention, and how the sampling variability was done. The study Chris and her colleagues conducted is I believe is sufficient to state that it is a form of evidence-based practice. The study might have met their needs for their organization, although it could use more detail in many aspects of their research process to be considered an actual program in an evidenced-based registry (Dudley, 2010).

References

Dudley, J. R. (2014). Social work evaluation: Enhancing what we do. (2nd ed.) Chicago, IL: Lyceum Books. Chapter 9, “Is the Intervention Effective?” (pp. 226-244)

Mattaini, M. A.(2010). Single-system studies. In B. Thyer (Ed.). The handbook of social research methods (2nd ed., p.241-273). Thousand Oaks, CA: SAGE. (PDF)

Plummer, S.-B., Makris, S., & Brocksen S. (Eds.). (2014b). Social work case studies: Concentration year. Baltimore, MD: Laureate International Universities Publishing. [Vital Source e-reader]. Social Work Research: Single Subject (pp. 70–72)

Tankersley, M., Cook, B. G., & Cook, L. (2008). A preliminary examination to identify the presence of quality indicators in single-subject research. Education & Treatment of Children, 31(4), 523–548.

Colleague 2: Rachel

Chris is a MSW for a geriatric case management program that wants to evaluate the effectiveness of short-term treatment approach, combining case management was solution-focused and task-centered goals with a practice approach of a multiple-baseline, single-subject design.  Chris is client, George enter the program after he was hospitalized for fainting in public. There was no medical reasoning for his feet other than signs of slight cognitive impairments and dementia.  The caseworker did an assessment of needs for the client which included personal care, decrease in mobility, and longer-term planning around living arrangement and home safety. At the beginning of each session, the client and social worker evaluated the task-centered approach on a 10 point scale.  The results showed that most needs were at least partially addressed and some task were completed.  The outcome of Chris’s study with her client George would lead me to adopt the model of case management which solution focused on task centered approach is because it is a collaborative approach including the client. The client is able to generate task with the social worker that are measurable and reachable.  George previously lost his wife two years ago, so the task centered model would help to keep him busy with a smaller chance of depression symptoms.  Also, the social worker and client are collaboratively scoring the task at the beginning of each session which allows the client to review his progress.  One recommendation for improvement Chris could consider is treatment for his slight cognitive impairments and dementia. These factors could greatly improve his scores each session. Due to these factors, he could be doing great at completing tasks at home, but may not be able to recall during his sessions.  Although I would personally adopt this model, if Chris wanted to submit their intervention to an evidence-based registry, she would have to provide more research (Plummer, Makris, & Brocksen, 2014).

Reference:

Plummer, S.-B., Makris, S., & Brocksen S. (Eds.). (2014b). Social work case studies: Concentration year. Baltimore, MD: Laureate International Universities Publishing. [Vital Source e-reader].“Social Work Research: Single Subject” (pp. 70–72)

 

RESPONSE 2

Respond to at least two colleagues by addressing an example in each colleague’s post in at least one of the following ways:

• Suggest a strategy for addressing a situation that your      colleague described in one of his or her examples. 
• Offer additional thoughts regarding the impact of the interaction      described in the example.

Colleague 1: MaShunda

How a social work administrator’s personal leadership philosophy style may influence a human service organization culture

The culture of an organization can affect how business if being completed with stakeholders, clients, workers and the community. Leadership philosophy style can dictate and affect the culture of an organization. If the culture of administration is Authoritarian, others may find that while the administration is well organized,  it can also be controlling and individuals are not allowed to have a say in what is taking place within the organization which can diminish how a person views his or goals within the organization (Northhouse, 2018). Example, when I worked for the Department of Social Services we were not allowed to socialize with colleagues, we had to always share with our supervisor what we were doing (even share when we were going to the restroom), we had a set quota of work that needed to be completed each day (even if you were the person that was doing intake for the day), and workers were never given the opportunity to share their concerns. This made for a very stressful work environment and a high turnover rate within the department. On the other hand, this could be the perfect administration for someone just starting out in the human service field, due to the authoritarian style being more structure it will a good learning environment (Northhouse, 2018).

In a Democratic organization, administration shows a willingness to assist each other and work together to complete a common goal. This organization may not be as organized as an authoritative organization but does give individuals that opportunity to grow, is goal orientated, and work with followers (Northhouse, 2018). Example, in the organization that I currently work for I am a community-based worker so supervision is minimal most of the time. The company is very knowledgeable about staff goals and always attempts to assist staff in reaching their goals.   Workers make their own schedules but meet with supervisors weekly to discuss how administration challenges impact their work. Although I am in the field, I still feel as if I am apart of the organization and that may need are being met. Most of the individuals that I have met while working with this organization have been there for years due to the administration often hiring from within and learning staff goals and strengths. The downside is that there is no real structure because you are by yourself most of the time and the individuals have to be task-oriented to ensure that agency and client expectation are met.

Explain how the organization’s culture might influence a social worker administrators personal leadership style

An administrator leadership style is often times dictated by the culture of the organization. As an administrator, I have found that my personal leadership style is more on the Democratic side so working within an organization that has a totally authoritative culture is a little difficult for me at times. I like to take into consideration what is taking place with followers, learn the strengths of staff and make adjustments accordingly and in an authoritative culture, this is not always acceptable behavior. Also, I come from an educational career path so I love teachable moments and to assist individuals with reaching goals. I do believe in meeting the needs of the agency but in my opinion, you don’t have to be authoritative to get the job done. I feel as if I cannot share my thoughts or creative side then I am doing the agency or organization and injustice and stifling the chances of growth.

Explain how interactions with stakeholders may ultimately impact the organization’s treatment of clients

In dealing with stakeholders that sway more to towards the Theory X way of doing business, the organization may not take into consideration how the client feels or if client needs are always being met. Theory X stakeholder may only see the bottom line which could take away the human side of dealing with a client in the community or office setting. Stakeholders taking on this style may not have much communication with clients because they are only sharing with organization how they need to address clients.

If stakeholders are more of the Theory Y type, then the client may be apart of addressing how the organization does business. In this setting, stakeholders may take the time to build relationships with the clients and become aware of personal and environmental needs. These stakeholders may be very in tune with the needs of the client by may be less in tune as to how the company should be structured to meet such needs.

Reference

Northhouse, P. G. (2018). Introduction To Leadership Concepts and Practice. Fourth Edition. Washington, D.C: Sage.

Colleague 2: Daneilia

Personal Leadership Philosophy and Style

A social work administrator’s leadership philosophy and style may influence a human services organization’s culture by the nature and behavior of the work executed (Northouse, 2018).  The social work administrator can be influential through one’s demeanor and thought process.  For example, as an administrator, I believe that individuals will work if I am motivated and can do the things I ask others to do.  Therefore, emphasizing I understand the job, or I am willing to learn the job, and I am open to suggestions or opinions.

The Organization’s Culture Influence Leadership Style

The organization’s culture can be an influential component in one’s leadership style.  If the organization’s focus is on interaction with people, then the leader may take on a relationship style.  Relationship style is defined by the moment when interacting with another individual or group (Northouse, 2018).  The leader might not be an extremely social person, but because of the work environment, the leader might socially project themselves.  Alternatively, depending on the agency, the culture may lean on laissez-faire, and it is a to each their own and everyone is self-sufficient.  A leader in this situation might have to take down a high functioning style to a relaxed, laid-back style.

Interactions with Stakeholders Are Influential

Interactions with stakeholders such as community members are influential to the impact on the treatment of clients.  If community members feel that there may be the unjust treatment of clients or that a policy needs to be reformed to give more efficient coverage, the delivery of services may need altering.  There is a possibility of missing something during a client’s session that is dominantly seen in a majority of the clients’ sessions.  The organization’s staff may have issues with the practices used to treat clients.  The staff might have findings of the specific practices used by the organization not efficient for the use of the population in which one treats.  Therefore, the request to use various other practices or incorporating other resources during therapy may be encouraged or demanded.

Reference

Northouse, P. G. (2018). Introduction to leadership: Concepts and practice (4th ed.). Washington, DC: Sage.

Create two questions for your instructor. The two questions must relate to the Chapters 1 through 3 attachment readings and learning objectives/competencies. Ask 2 questions to your instructor that are directly related to learning objectives/competencies that the active student (you) want more assistance with to strengthen comprehension of research methods in this psychology program class.

The Statistics Project assignment has been broken down into multiple parts and you will complete these parts throughout the course. This week’s assignment allows you to become familiar with opening data and viewing it in Microsoft® Excel® and using the Analysis Toolpak. In research, the individual data points are entered into databases, but for the purpose of this course, the data is provided in a spreadsheet for you in the Happiness and Engagement Dataset.

Imagine you have been asked to enhance workplace happiness and engagement at your company. You have conducted a survey and gathered data on the gender, age, relationship with direct supervisor, telecommute schedule, relationship with coworkers, along with the ratings for workplace happiness and workplace engagement for 50 individuals in your department. You must determine what variables affect workplace happiness and engagement. The first step is to run descriptive statistics on each variable to learn more about the data you have collected.

Calculate descriptive statistics for the following variables in the provided Microsoft® Excel® dataset:

• Gender
• Age
• Relationship with Direct Supervisor
• Telecommute Schedule
• Relationship with Coworkers
• Workplace Happiness Rating
• Workplace Engagement Rating

Write a 125- to 175-word summary of your interpretation of the descriptive results for each variable. Copy and paste the Microsoft® Excel® output below your summary.

Format your summary according to APA guidelines.

IMPORTANT: AFTER PURCHASE, LOG IN TO YOUR ACCOUNT AND SCROLL DOWN BELOW THIS PAGE TO DOWNLOAD FILES WITH ANSWERS.

1. Consider the following sample item on a personality test:
Instructions: Which statement describes you better?
(A) I am unhappy too much of the time.
(B) I am nervous too much of the time.
This item is an example of which type of item format?

2. The Sixteen Personality Factor Questionnaire (16 PF) contains 16 factors developed through factor analysis. There is, however, controversy about the number of factors that are “really” evident in this test. According to your textbook, most theorists who argue that there are not 16 factors on the 16 PF believe that

3. According to Dr. Rick Malone, which is true about Meloy’s (2000) biopsychosocial (BPS) model?

4. The assumption that a constellation of traits and states may be used to identify a particular category of personality is inherent in

5. A woman who states as a fact that she “wears too many hats” in her daily life might BEST be characterized as

6. A key definitional difference between the terms personality trait and personality state has to do with

7. For Colonel Rick Malone, the practice of threat assessment entails, among other things, the gathering of intelligence designed to protect senior Department of Defense officials who are referred to as “principals.”

8. In the Karisoke study of gorilla personality, inter-rater reliability was found to be ________ among the ________ raters.

9. The Self-Directed Search Tests are based on six personality

10. Who typically serves as the informant when the Personality Inventory for Children II (PIC-II) is administered?

11. The MMPI-A may be criticized for its lack of

12. Rating scales may be used to

13. Which of the following BEST represents your textbook authors’ definition of personality?

14. As a result of self-monitoring her food intake a former client of Weight Watchers finds that her food intake habits have improved. This phenomenon could BEST be cited as an example of

15. The oracle-like, clinical orientation has been characterized as the third ear approach. According to your textbook, this orientation has been replaced by what might be termed

16. When interpretations about personality are derived from analysis of figure drawings

17. In 1907, an early study using pictures as projective stimuli for storytelling found differences as a function of

18. The utility of self-reports and self-monitoring is to some extent dependent on

19. In recent years, projective tests have

20. The polygraph

21. Which of the following is NOT an unobtrusive measure?

22. An early projective test used ________ as projective stimuli.

23. According to Emanuel Hammer, people project their self-image or self-concept in

24. Debate over the validity of the Rorschach has stemmed from inconclusive results of research examining

25. The use of projective tests minimizes

Question: A negative correlation between a hockey player’s age and the number of minutes he spends in the penalty box indicates that:
the older a player is, the less time he spends in the penalty box.
spending more time on the ice leads hockey players to become skilled at avoiding the referees.
an older player’s greater experience has taught him how to avoid making penalties.
older players make fewer penalties because they have reduced testosterone levels.

Flag this Question Question 22 pts Gretchen, an adult, takes an intelligence test and it shows she has slightly above average intelligence. Four years later, she has the chance to take the same test again. This time it reports that she is a genius. While she wants to believe the results, she wonders if the inconsistency of results over time might mean the test:
is poorly correlated with intelligence.
has low test–retest reliability.
has high split-half reliability.
has a high coefficient alpha.

Flag this Question Question 32 pts Researchers who study the process of reading in children have discovered that better readers make smoother eye movements across the page (i.e., there is a positive correlation between reading skill and the smoothness of the eye movements). Which of the following statements is a possible cause of the correlation between smooth eye movements and reading ability?
Having good reading skills allows a child to make smooth eye movements.
All of these options are possible causes of the correlation.
The ability to make smooth eye movements improves reading ability.
Some third factor might cause both smooth eye movements and improved reading ability.

Flag this Question Question 42 pts What is the correlation between a person’s weight as measured in grams and a person’s weight as measured in pounds?
+1.00
–1.00
0.00
It is impossible to determine from the information provided.

Flag this Question Question 52 pts The model of possible causal explanations for a correlation is called the:
A-B-C model.
cause-and-effect model.
causal explanation model.
1-2-3 model.

Flag this Question Question 62 pts “The incidence of depression among college students is negatively correlated with the number of sunny days each year in the locale where they attend college.” This statement means that:
if a depressed student were to move to a locale with more sunny days, her depression would subside.
a student attending college in a locale with very few sunny days will become depressed.
the chances of a college student being depressed tend to increase as the number of sunny days increases.
the chances of a college student being depressed tend to be higher with fewer sunny days.

Flag this Question Question 72 pts A positive correlation between head size and foot size indicates that:
having large feet causes a person to have a large head.
having a large head causes a person to have large feet.
people with larger feet tend to have smaller heads.
people with larger feet also tend to have larger heads.

Flag this Question Question 82 pts A perfect linear relationship will yield a Pearson’s r value of:
1.00 or –1.00.
0.
1.00.
–1.00.

Flag this Question Question 92 pts The best and most widely used measure of reliability is:
the split-half correlation, in which the odd and even numbered items of a measure are correlated to assess internal consistency.
criterion-related reliability.
coefficient alpha, the average of all possible split-half correlations.
the test-retest reliability.

Flag this Question Question 102 pts Test-retest reliability is determined by:
correlating the odd numbered items of a measure with an individual’s performance on the even numbered items of that same measure.
correlating the odd numbered items of a measure with an individual’s performance on the even numbered items of a different measure.
administering the same measure to two different samples at two different points in time and calculating the correlation between an individual’s performance at the two different times
administering the same measure to the same sample at two different points in time and calculating the correlation between an individual’s performance on the two administrations.

Flag this Question Question 112 pts The sign of the correlation communicates:
the direction of the association.
the direction and strength of the correlation.
the direction of the causal relationship.
the strength of the correlation.

Flag this Question Question 122 pts Psychometricians are concerned with:
studying illness and the onset of psychological illness.
developing high quality tests and measures.
statistics and computers.
fixing psychological issues in people.

Flag this Question Question 132 pts One assumption for using hypothesis testing for Pearson correlation is that one variable should vary equally at each level of the other variable. What is the easiest way to determine whether this assumption has been met?
If the calculation of r is high, then the assumption has been met.
Calculate the cross-products of the deviation scores. If the result is positive, then the assumption has been met.
Conduct a post-hoc test following the calculation of r.
Draw a scatterplot to see whether the range of values is equal across all values of the other variable.

Flag this Question Question 142 pts Which of the following numbers would represent a perfect correlation?
–1.00
1.00
–1.00 or 1.00
0

Flag this Question Question 152 pts What kind of correlation would you expect to find between the severity of snowstorms and rates of attendance at college classes?
positive
perfect negative
negative
zero

Flag this Question Question 162 pts The denominator of the Pearson correlation equation corrects for ________ and ________ issues present in the numerator.
negative values; nonlinear data
sample size; nonnormality
negative values; variability
sample size; variability

Flag this Question Question 172 pts In a reanalysis of published studies, Twenge and Im (2007) found that for the time period 1958–2001, the need for social approval of people in the United States was negatively correlated with the U.S. violent crime rate during the same period (the correlation coefficient was –0.31). This correlation means that:
as the need for social approval went up, the number of violent crimes also increased.
the need for social approval prevented people from committing violent crimes.
the need for social approval spurred people to commit violent crimes.
as the need for social approval went up, the number of violent crimes decreased.

Flag this Question Question 182 pts Imagine that you’ve just read the results of a study that finds a positive correlation between gum chewing and life expectancy. Which of the following statements would be a statistically appropriate response to the results of the study?
You bemoan the possibility of living so long that you will have to chew lots of gum.
You become curious about what third variables might cause both increases in gum chewing and increases in life expectancy.
You purchase a lifetime supply of gum because chewing gum is good for your health.
You tell all your friends and family members to chew gum because it is good for their health.

Flag this Question Question 192 pts If all the points on a scatterplot fall on a single line:
there is a positive correlation between the two variables.
the relation between the variables is perfect.
there is no relation between the variables.
the variables are causally related.

Flag this Question Question 202 pts What kind of correlation would you expect to find between levels of family income and household spending on consumer goods?
zero
perfect positive
positive
negative

Flag this Question Question 212 pts The numerator (top half) of the Pearson correlation coefficient formula includes:
the difference between the two sample means.
the sum of the product of the deviations for each variable.
.
the square root of the product of the two sums of squares.

Flag this Question Question 222 pts Suppose a researcher discovers that length of time spent following a Mediterranean diet is negatively correlated with risk of developing cancer. Which of the statements logically follows from this information?
Eating a Mediterranean diet reduces the risk of developing cancer.
People who ate a Mediterranean diet for more time were more likely to have cancer.
Eating a Mediterranean diet increases the risk of developing cancer.
People who ate a Mediterranean diet for more time were less likely to have cancer.

Flag this Question Question 232 pts Figure: Student-Faculty Ratio

Reference: Figure 1
(Figure: Student–Faculty Ratio) The relation depicted in the scatterplot is potentially deceptive because of:
poor validity.
poor reliability.
the presence of outliers.
restriction of range.

Flag this Question Question 242 pts Assume that the correlation coefficient between class attendance and number of problems missed on an exam is (–0.77). Which statement regarding this finding is correct?
There is definitely no causal relationship between the two variables.
The correlation provides definitive information pertaining to causation.
If you attend class regularly, you are more likely to do well on the exam than someone who does not attend class regularly.
If you start attending class more regularly, the number of problems you miss on the next exam is certain to be reduced.

Flag this Question Question 252 pts The Pearson correlation coefficient is symbolized:
x
r
c
t

Flag this Question Question 262 pts The ________ quantifies the relationship between two variables.
magnitude of the correlation
sign of the correlation
correlation coefficient
correlation

Flag this Question Question 272 pts A ________ is a graphical representation of the relation between two variables.
polygon
correlation coefficient
scatterplot
histogram

Flag this Question Question 282 pts The proportionate reduction in error is a measure of the:
correlation between two variables.
variability of the dependent measure.
amount of variance in the dependent variable explained by the independent variable.
slope of a regression line.

Flag this Question Question 292 pts With regression we are concerned about variability around the ________, rather than variability around the ________ which would be the case in t tests or ANOVAs.
line of best fit; mean
median; tails of the distribution
mean; outliers
outliers; line of best fit

Flag this Question Question 302 pts To determine the slope of the line of best fit using the z-score regression information, we compare the values of:
X at zero versus X at 1.0.
X at zero versus Y at zero.
Y at zero versus X at zero.
Y at zero versus Y at 1.0.

Flag this Question Question 312 pts The regression line is also called the:
prediction estimate.
error of estimate.
line of best fit.
line of central limit.

Flag this Question Question 322 pts If we have information about the slope of the line of best fit that corresponds to two sets of data about class grades for different instructors, we cannot make comparisons based on these slopes because:
they are based on different populations.
slopes cannot be compared meaningfully.
they are not on a common scale.
the slopes have to share the same sign.

Flag this Question Question 332 pts Every year it seems as though last season’s baseball rookie of the year fails to live up to expectations for his sophomore season. What might explain this phenomenon?
regression to the mean
standard error of the estimation
overestimation of effect size
proportionate reduction in error

Flag this Question Question 342 pts Multiple regression predicts scores on a single ________ from scores on more than one ________.
dependent variable; independent variable
scale variable; nominal variable
independent variable; predictor variable
predictor; dependent variable

Flag this Question Question 352 pts As the standard error of estimate becomes larger, predictions become:
less accurate.
more accurate.
smaller.
larger.

Flag this Question Question 362 pts Proportionate reduction in error is sometimes called:
coefficient phi.
correlation coefficient.
alpha coefficient.
the coefficient of determination.

Flag this Question Question 372 pts A researcher calculates a standardized regression coefficient on data from 52 events and computes β as 0.274. Assuming a two-tailed hypothesis test of the relation between these two variables is being conducted with an alpha of 0.05, what are the critical cutoffs?
–0.288 and 0.288
–0.273 and 0.273
–0.361 and 0.361
–0.250 and 0.250

Flag this Question Question 382 pts The measure of effect size used with regression is:
R2, just like with ANOVA.
the proportionate reduction in error, r2.
the alpha coefficient.
standard error of correlation.

Flag this Question Question 392 pts Which of the following statistics quantifies the improvement in ability to predict a person’s score when using the regression line rather than the mean?
standard deviation
proportionate reduction in error
standard error of the estimation
slope

Flag this Question Question 402 pts The standardized regression coefficient is not equal to the correlation coefficient when:
both variables are measured on an interval scale.
there is greater variability in the X variables compared to the Y variable.
the equation includes more than one independent variable.
a negative relationship is present.

Flag this Question Question 412 pts In a study designed to predict blood cholesterol levels from amount of daily saturated fat in grams (X1) and number of hours of daily exercise (X2), we determine that the slope of X1 is 5, the slope of X2 is –4, and the y intercept is 130. Which of the following formulas is the regression equation for these data?
Ŷ = 130 + 5(X1) – 4(X2)
Ŷ = 130 + 5(X1) + 4(X2)
Ŷ = 130 + 1(X)
Ŷ = 130 – 5(X1) – 4(X2)

Flag this Question Question 422 pts The standardized regression coefficient expresses the:
likelihood of rejecting the null hypothesis with a regression analysis.
relation between the independent and dependent variable in terms of squared units.
strength of the correlation between the two variables that are now incorporated into a regression analysis.
predicted change in the dependent variable in terms of standard deviation units as a result of a 1 standard deviation increase in the independent variable.

Flag this Question Question 432 pts The standardized regression coefficient is often called a:
normalized regression.
beta weight.
weighted estimate.
estimate of best fit.

Flag this Question Question 442 pts The regression line is the line that:
minimizes the correlation coefficient.
is the mean of the dependent variable.
minimizes error in predicting scores on the independent variable.
minimizes error in predicting scores on the dependent variable.

Flag this Question Question 452 pts The standardized regression coefficient expresses a predicted change in the dependent variable in terms of:
error units.
slope.
a 1-unit change in the independent variable.
standard deviations units.

Flag this Question Question 462 pts We can examine a graph to get a sense of how much error there is in a regression equation. Which of the following describes a graph that reveals there will be a high amount of error when using our regression equation?
Data points cluster very close to the line with several outlier exceptions.
The data points consistently cluster far away from the line of best fit.
Data points cluster close around the line of best fit.
Data points fall directly on the line.

Flag this Question Question 472 pts In the equation Ŷ = 98 + 4.30(X1) + 7.20(X2), what is the slope?
98
4.30
Both 4.30 and 7.20 are slopes.
7.20

Flag this Question Question 482 pts In the equation for a regression line, the intercept is the:
predicted value for Y when X is equal to 0.
value for X when Y is equal to 0.
z score of the amount that Y is predicted to increase as X increases.
amount that Y is predicted to increase for a one-unit increase in X.

Flag this Question Question 492 pts In a study designed to predict blood cholesterol levels from amount of daily saturated fat in grams (X1) and number of hours of daily exercise (X2), we determine that the slope of X1 is 5, the slope of X2 is –4, and the y intercept is 130. If someone reports that she typically eats 10 grams of saturated fat daily and exercises 1 hour daily, what would you predict for the person’s cholesterol level?
184
180
176
150

Flag this Question Question 502 pts A small standard error of the estimate means that:
your two variables are poorly correlated.
confounding variables may be present.
variability is high in your Y variable.
you are making predictions with great accuracy.

Flag this Question Question 512 pts The table includes information for creating a regression equation to predict students’ attitude toward statistics from their attitudes toward Britney Spears and beer.

Table: Coefficients(a)

Model  Unstandardized Coefficients Standardized Coefficients t Sig.
B Std. Error Beta
1 (Constant) 4.974 0.590  8.432 0.000
attbritneyspears 0.264 0.155 0.256 1.701 0.097
attbeer -0.309 0.122 -0.381 -2.536 0.015
a Dependent variable: attstatistics Reference: Table 1
(Table: Coefficients) What is the y intercept for this problem?
0.590
0.000
4.974
8.432

Flag this Question Question 522 pts The table includes information for creating a regression equation to predict students’ attitude toward statistics from their attitudes toward Britney Spears and beer.

Table: Coefficients(a)

Model  Unstandardized Coefficients Standardized Coefficients t Sig.
B Std. Error Beta
1 (Constant) 4.974 0.590  8.432 0.000
attbritneyspears 0.264 0.155 0.256 1.701 0.097
attbeer -0.309 0.122 -0.381 -2.536 0.015
a Dependent variable: attstatistics Reference: Table 1
(Table: Coefficients) Was either variable a significant predictor for attitude toward statistics?
Attitude toward Britney Spears was a significant predictor but attitude toward beer was not.
No; neither was a signigicant predictor.
Yes; both were significant predictors.
Attitude toward beer was a significant predictor but attitude toward Britney Spears was not.

Flag this Question Question 532 pts If two variables, independently, can help us predict the outcome of a third variable, we say that they are:
orthogonal.
autonomous.
standardized.
proportionate.