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

Short Answer

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 .