Describing Correlation Coefficients
Describe in words the nature of the relationship between each pair of variables as indicated by the value
of the correlation coefficient. Be sure to include:
a. the direction of the relationship.
b. the strength of the relationship.
c. a verbal description of the way the variables “go together.
- r = .96 between craving for pizza and ability to concentrate on studying.
- r = +.02 between length of marriage and marital satisfaction.
- r = +.55 between parent and child intelligence test scores.
- r = .90 between amount of alcohol consumed and performance on a motor coordination task.
- r = +.75 between amount of money won and the number of hot dogs purchased at race tracks.
- r = +.67 between scores on a hyperactivity scale and an aggressiveness scale.
- r = .82 between a job applicant’s age and likelihood of being hired.
- r = +.06 between the number of yearly predictions by psychics and the number of correct predictions.
Sample Solution
