Chi-square test for independent of attributes.
A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations? The students were asked if they were "favorable", "neutral", or "unfavorable" toward corporations in general. The data collected also included the class status of each student interviewed. With the following tabulated results, test the hypothesis that there is no difference among students with respect to their attitude about corporations.
|
|
Favorable
|
Neutral
|
Unfavorable
|
|
Freshmen
|
100
|
50
|
70
|
|
Sophomores
|
80
|
60
|
70
|
|
Juniors
|
50
|
50
|
80
|
|
Seniors
|
40
|
60
|
90
|