When the variables of interest are measured on nominal or ordinal scales,what should be used to estimate population variance?
A) Standard error
B) Standard deviation
C) Sample proportion of incidence (p)
D) Sample proportion of incidence (p) * 1 - (p)
E) Sample statistic

Question

Quizplus · Accepted Answer

When dealing with nominal or ordinal data, the sample proportion of incidence (p) and its complement (1-p) are used to estimate variance, as these data types do not have a meaningful mean or standard deviation.

When the Variables of Interest Are Measured on Nominal or Ordinal