When data is collected using a qualitative, nominal variable (in other words, male or female), what is true about a frequency distribution that summarizes the data?
A) The upper and lower class limits must be calculated.
B) Class midpoints can be computed.
C) The number of classes corresponds to the number of a variable's values.
D) The "2 to the k rule" can be applieD.

Question

Quizplus · Accepted Answer

When data is collected using a qualitative, nominal variable, such as gender (male or female), the frequency distribution can be created by grouping the data into categories that correspond to the variable's values (male or female). Therefore, the number of classes in the frequency distribution corresponds to the number of values of the variable. The upper and lower class limits are not relevant since there is no numerical data to assign to them, and class midpoints cannot be computed. The "2 to the k rule" is also not applicable for this type of data.

When Data Is Collected Using a Qualitative, Nominal Variable (In