Research Methods

Correlation

1. Imagine that researchers have found a correlation of .72 between the frequency of fights that couples have and how long they stay together. Based on this correlation, should you start picking fights with your significant other in order to sustain your relationship?

A. yes, because the correlation is positive

B. no, because the correlation is positive

C. no, because although the two may be correlated, causation has not been proved

D. no, because in your group of friends, the correlation is negative.

2. Which correlation shows the strongest relationship?

A. .56, p = .01

B. -.80, p = .05

C. .23, p = .10

D. –2.00, p = .001

3. The correlation shown in the scatterplot below is most likely

A. -.91

B. +.91

C. -.34

D. +.34

4. Write an interpretation of the following correlations.

Correlations between same-sex popularity and opposite-sex popularity:

Males .49*

Females -.30*