When Data Is Collected Using a Qualitative, Nominal Variable, I

Multiple Choice

When data is collected using a qualitative, nominal variable, i.e., male or female, what is true about a frequency distribution that summarizes the data?

A) Upper and lower class limits must be calculated.
B) Class midpoints can be computed.
C) Number of classes corresponds to the number of a variable's values.
D) The "2 to the k rule" can be applied.