# Correlation

1. Which is the weakest correlation?

a. +0.76

b. +0.21

c. -0.01

d. -0.88

2. What would a correlation of .35 would be called?

a. Moderate

b. Weak

c. Very Strong

d. Very Weak

3. Which correlation coefficient indicates the strongest relationship?

a. 0.00

b. +0.50

c. -0.70

d. +0.60

4. Which of the following shows an example of how a correlation coefficient may be written?

a. RXRY=0.45

b. rXY=0.26

c. XYCc=0.67

d. rxy=0.53

https://brainmass.com/statistics/correlation/correlation-221028

#### Solution Preview

Please see attached file

1.Â Â Which is the weakest correlation?

Â Â Â Â a.Â Â +0.76

Â Â Â Â b.Â Â +0.21

Â Â Â Â c.Â Â -0.01

Â Â Â Â d.Â Â -0.88

Answer: Â Â Â Â c.Â Â -0.01

Strength of correlation is indicated by coefficient of determination;

Coefficient of determination is the square of coefficient of correlation

Coefficient of correlation Coefficient of determination

0.76 0.5776

0.21 0.0441

-0.01 0.0001

-0.88 0.7744

The weakest correlation ...

#### Solution Summary

Answers MCQ on correlation.