Test the significant difference between chi-square for attributes.
Are teen's attitudes toward trying cocaine dependent on their GPA? Using data from the MTF 2006, test whether attitude toward trying cocaine is independent of high school GPA (∝ = 0.01). How is this relationship different from the bivariate relationships explored in Exercises 10 and 11?
|
Attitude Toward
|
GPA
|
|
Trying Cocaine
|
2.0 or less
|
3.0
|
4.0
|
Total
|
|
Don't disapprove
|
24
|
30
|
15
|
69
|
|
Disapprove
|
28
|
31
|
27
|
86
|
|
Strongly disapprove
|
82
|
187
|
182
|
451
|
|
Total
|
134
|
248
|
224
|
606
|