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In order to test whether the degree of certainty is independent of the credits earned or not, we use chisquare test for independence of variables.

Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research Question: At α = .01, is the degree of certainty independent of credits earned?

Credits Earned	Very Uncertain	Somewhat Certain	Very Certain	Row Total
0-9	12	8	3	23
10-59	8	4	10	22
60 or more	1	7	11	19
Col Total	21	19	24	64

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