Which of the following best describes the approach taken if the expected frequency $e _ { i }$ for any cell i is less than 5?
A)We must choose another sample of five or more observations.
B)We should use the normal distribution instead of the chi-squared distribution.
C)We should combine the cells such that each observed frequency $f _ { i }$ is 5 or more.
D)We must increase the number of degrees of freedom for the test by 5.

Question

Quizplus · Accepted Answer

When the expected frequency $e _ { i }$ for any cell i is less than 5, the appropriate approach is to combine cells to ensure that each expected frequency is 5 or more. This is done to meet the assumptions of the chi-squared test, which requires sufficient expected frequencies in each category for the approximation to the chi-squared distribution to be valid.

Which of the Following Best Describes the Approach Taken If eie _ { i }ei​

Which of the Following Best Describes the Approach Taken If $e _ { i }$