Since computation of the standard deviation requires addition, division, and other mathematical operations, it should be used for
A) interval-ratio level variables
B) variables at any level of measurement
C) nominal level variables
D) ordinal level variables only

Question

Quizplus · Accepted Answer

Standard deviation is a measure of dispersion that requires interval-ratio level variables which have numerical values and meaningful zero points. It involves mathematical operations such as addition, subtraction, and division which can only be performed on interval-ratio level variables. Thus, the correct choice is A.

Since Computation of the Standard Deviation Requires Addition, Division, and Other