17) Which of the following is NOT a requirement to conduct a hypothesis test for

Question

17) Which of the following is NOT a requirement to conduct a hypothesis test for independence between the row variable and column variable in a contingency table? A. The sample data are randomly selected. B. The sample data are represented as frequency counts in a two-way table. C. For every cell in the contingency table, the observed frequency is at least 5. D. For every cell in the contingency table, the Expected frequency is at least 5. 18) Which of the following tatement (or formula) is correct in conducting a hypothesis test for independence between the row variable and column variable in a contingency table? A. Null hypothesis: the row and column variables are dependent. B. Expected frequency (E)- (row total + column total)/grand total. C. Degrees of freedom - number of rows+ number of columns. D. Expected frequency (E) (row total column total)/grand total.

Explanation / Answer

17) Option A Statement is not a requirement for the independence test .

18) Correct formula is Option D

Expected Frequency = ( rowtotal*Column Total)/Grand total

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