A measure of the strength of relationship between two variables.
Dependent on the units of measurement of the variables.
An unstandardized version of the correlation coefficient.
Answer: All of these
How much variance has been explained by a correlation of .9?
Answer choices
18%
9%
81%
None of these
Answer: 81%
A correlation of .7 was found between time spent studying and percentage on an exam. What is the proportion of variance in exam scores that can be explained by time spent studying?
Answer choices
.70
.49
.30
.7
Answer: .49
Rank the score of 5 in the following set of scores:
9, 3, 5, 10, 8, 5, 9, 7, 3, 4
Answer choices
4.5
4
3
6
Answer: 4.5
If Pearson’s correlation coefficient between stress level and workload is .8, how much variance in stress level is not accounted for by workload?
