In: Statistics and Probability
Please show steps
An Educational Psychologist would like to know the relationship
between the
number of hours per week that students study for a course and their
performance in
the test.
a) Compute the Pearson correlation of the data below
b) Determine the significance of the correlation at α .05,
two-tailed by referring
to Table B.6 in the Appendix of your textbook. State whether the
correlation is
significant.
c) Confirm the Pearson correlation by ranking the number of hours of study and the test scores and compute the Spearman correlation
d) Show whether his conclusion regarding the significance of the
Spearman correlation is similar to his conclusion regarding the
Pearson correlation.
No. of hours of study | Test Scores |
8 | 84 |
10 | 90 |
7 | 85 |
6 | 71 |
5 | 73 |
4 | 68 |
9 | 86 |
12 | 92 |
6 | 70 |
8 | 80 |