Which of the following is our best option if the expected frequency for any cell i is less than five and we want to use Pearson's chi-square statistic in our experiment?
A) We must choose another sample of five or more observations.
B) We should use the normal distribution instead of the chi-square distribution.
C) We should combine the cells such that each observed frequencyis five or more.
D) We increase the number of degrees of freedom for the test by five.

Question

Which of the following is our best option if the expected frequency  for any cell i is less than five and we want to use Pearson's chi-square statistic in our experiment?
A) We must choose another sample of five or more observations. 
B) We should use the normal distribution instead of the chi-square distribution. 
C) We should combine the cells such that each observed frequencyis five or more. 
D) We increase the number of degrees of freedom for the test by five.

Quizplus · Accepted Answer

If the expected frequency for any cell is less than five, we should combine the cells such that each observed frequency is five or more. This is because the chi-square test assumes that the expected frequency in each cell is at least five. By combining cells, we can ensure that this assumption is met, and the chi-square test can be used reliably.

Which of the Following Is Our Best Option If the Expected