# Correlations – (need someone who can complete this in 24 hours)

(Need someone who can complete this in 24 hours)

Answer the following questions using the Week 6 Correlations Exercises SPSS Output provided in this week’s Learning Resources.

1. What is the strongest correlation in the matrix? (Provide the correlation value and the names of variables)
2. What is the weakest correlation in the matrix? (Provide the correlation value and the names of variables)
3. How many original correlations are present on the matrix?
4. What does the entry of 1.00 indicate on the diagonal of the matrix?
5. Indicate the strength and direction of the relationship between body mass index (BMI) and physical health component subscale.
6. Which variable is most strongly correlated with BMI? What is the correlational coefficient? What is the sample size for this relationship?
7. What is the mean and standard deviation for BMI and doctor visits?
8. What is the mean and standard deviation for weight and BMI?
9. Describe the strength and direction of the relationship between weight and BMI.
10. Describe the scatterplot. What information does it provide to a researcher?

Week 6 – Correlations SPSS Outputs

Descriptive Statistics

Mean Std. Deviation N

Number of doctor visits, past

12 mo

6.80 12.720 997

Body Mass Index 29.2226 7.37893 970

SF12: Physical Health

Component Score,

standardized

45.11422 10.840059 893

SF12: Mental Health

Component Score,

standardized

46.82843 10.806477 893

Correlations

Number of

doctor visits,

past 12 mo

Body Mass

Index

SF12: Physical

Health

Component

Score,

standardized

SF12: Mental

Health

Component

Score,

standardized

Number of doctor visits, past

12 mo

Pearson Correlation 1 .131** -.316** -.133**

Sig. (2-tailed) .000 .000 .000

N 997 967 890 890

Body Mass Index Pearson Correlation .131** 1 -.134** -.078*

Sig. (2-tailed) .000 .000 .022

N 967 970 866 866

SF12: Physical Health

Component Score,

standardized

Pearson Correlation -.316** -.134** 1 .168**

Sig. (2-tailed) .000 .000 .000

N 890 866 893 893

SF12: Mental Health

Component Score,

standardized

Pearson Correlation -.133** -.078* .168** 1

Sig. (2-tailed) .000 .022 .000

N 890 866 893 893

**. Correlation is significant at the 0.01 level (2-tailed).

*. Correlation is significant at the 0.05 level (2-tailed).

Scatterplot

Descriptive Statistics

Mean Std. Deviation N

Body Mass Index 29.2226 7.37893 970

Weight-pounds 171.4624 45.44083 971

Correlations

Body Mass

Index Weight-pounds

Body Mass Index Pearson Correlation 1 .937**

Sig. (2-tailed) .000

N 970 970

Weight-pounds Pearson Correlation .937** 1

Sig. (2-tailed) .000

N 970 971

**. Correlation is significant at the 0.01 level (2-tailed).