The choice of a measure of variability to describe scores is not determined by which of the following?
A)The scale of measurement.
B)The size of the class interval.
C)The shape of the frequency distribution.
D)The intended further statistical analysis of the data.

Question

Quizplus · Accepted Answer

The size of the class interval is not a determining factor for choosing a measure of variability. Measures of variability, such as range, variance, and standard deviation, are chosen based on the scale of measurement (nominal, ordinal, interval, ratio), the shape of the frequency distribution (e.g., normal, skewed), and the intended further statistical analysis (e.g., inferential statistics). The size of the class interval primarily affects the way data is grouped for presentation in histograms or frequency distributions, rather than the choice of variability measure.

The Choice of a Measure of Variability to Describe Scores