In Chi-Squared Tests, the Conventional and Conservative Rule - Known

Short Answer

In chi-squared tests, the conventional and conservative rule - known as the rule of five - is to require that the: A. expected frequency for each cell be at least 5 .
B. number of degrees of freedom for the test be at least 5 .
C. each expected and observed frequency be at least 5 .
D. difference between the observed and expected frequency for each cell be at least 5 .