If the expected frequency e_i for any cell i is less than 5,we should: A)choose another sample with five or more observations. B)use the normal distribution instead of the chi-squared distribution. C)combine cells such that each observed frequency f_i is 5 or more. D)increase the degrees of freedom by 5.

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Quizplus · Accepted Answer

If the expected frequency of any cell is less than 5, it is recommended to combine cells to achieve each observed frequency of 5 or more. This is because the chi-squared test assumes that the sample size is large enough for the expected frequencies to approximate the observed frequencies, and if the expected frequency is too low, the assumptions of the test may not be met. Choosing another sample or using a normal distribution instead of the chi-squared distribution may not resolve the issue of low expected frequencies. Increasing the degrees of freedom would not be appropriate in this situation.

If the Expected Frequency Ei for Any Cell I Is

If the Expected Frequency E_i for Any Cell I Is