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 only.
D)ordinal variables only.

Question

Quizplus · Accepted Answer

Standard deviation is calculated based on the distance of each data point from the mean of the data set. This calculation is meaningful only when the data set is measured on an interval or ratio scale. For nominal or ordinal data, the standard deviation is not applicable since the distance between categories and their ranking is usually not meaningful mathematically. Therefore, standard deviation is best used for interval-ratio level variables.

Since Computation of the Standard Deviation Requires Addition,division,and Other Mathematical