More Practice Problem ANSWERS: ANOR

 Item 5

To discover if education has a significant impact on people’s income, use the following information, perform an Analysis of Regression and complete the following summary table:

r= .73
SSx = 98
SSy = 44
N = 13

                            SS          df          ms

Regression          23.45        1       23.45
Error                   20.55      11        1.87
Total                   44           12         3.67

F = 12.55
What is the critical value for F:    4.84
Is the F significant?  Yes

To discover if music lessons have a significant impact on people’s intelligence, use the following information, perform an Analysis of Regression and complete the following summary table:

r= -.56
SSx = 111.3
SSy = 87.8
N = 16 

                         SS          df           ms
Regression      27.53         1        27.53
Error               60.27       14         4.30
Total               87.80       15         5.85