Computation of a mean (or average)is completely justified when a variable is measured at which level?
A)interval-ratio
B)ordinal
C)nominal
D)independent

Question

Quizplus · Accepted Answer

Computation of mean is appropriate only for interval-ratio level variables where the distance between values is constant and measurable. For nominal and ordinal level variables, where the values are categorical or not numerically ordered, alternative measures of central tendency such as mode and median are more suitable. The concept of 'independent' is not relevant in this context.

Computation of a Mean (Or Average)is Completely Justified When a Variable