The distribution of film genre preferences in a retirement community of 150 seniors is as follows: Drama-37%; Comedy-32%; Musicals-8%; Action-18%; Documentaries-5%. Why is it impossible to calculate a standard deviation for this variable?
A) The variable's categories are not mutually exclusive.
B) The variable's categories do not sum to 100%.
C) The variable is too skewed to calculate the variance.
D) The variable does not have a mean value.

Question

Quizplus · Accepted Answer

The standard deviation requires a mean value, which is not applicable to categorical data like film genre preferences.

The Distribution of Film Genre Preferences in a Retirement Community