For each of the following examples, state whether the chi-square goodness-of-fit

Question

For each of the following examples, state whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate, and state the degrees of freedom (df) for the test.

Part (a)

An instructor tests whether class attendance (low, average, high) and grade point average (low, average, high) are independent.

State whether the chi-square goodness-of-fit test or the chi-square test for independence is appropriate.

chi-square goodness-of-fitchi-square test for independence    

State the degrees of freedom for the test.
df =

Explanation / Answer

Chi square test for independence would be appropriate here because we are testing the association between two categorical variable.

Df = (Rows - 1)*(Columns - 1) = (3 - 1)*(3 - 1) = 2*2 = 4

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