Question

Which of the following cannot be a method of measuring dispersion?

• A. Range
• B. Interquartile range and quartile deviation
• C. Mean deviation or average deviation
• D. Skewness

Hint:

Measures of dispersion include Range, IQR, and Mean Deviation, but not Skewness

Answer 1

The Correct Option is D

Dispersion refers to the extent to which values in a data set deviate from the average or central value.
Range is the difference between the highest and lowest values.
Interquartile range (IQR) measures the range between the first and third quartiles
Mean deviation refers to the average of the absolute differences from the mean.
Skewness, however, measures the asymmetry of the distribution of values, not the spread of the data. Hence, it cannot be used as a measure of dispersion.