Question

Which of the following are measures of variation (dispersion)?
1. Mean
2. Standard deviation
3. Range
4. Mean deviation

• A. (A) and (B) only.
• B. (A), (B) and (D) only.
• C. (B) and (D) only.
• D. (B), (C) and (D) only.

Hint:

Measures of dispersion help understand the variability in data and complement measures of central tendency like the mean.

Answer 1

The Correct Option is D

Measures of variation or dispersion describe the spread or variability in a dataset.
The following are considered measures of dispersion:

• Standard deviation: Quantifies the amount of variation or dispersion in a dataset.
• Range: The difference between the maximum and minimum values in a dataset.
• Mean deviation: The average of the absolute deviations of data points from the mean.

Mean is a measure of central tendency, not dispersion. Therefore, the correct answer includes only options (B), (C), and (D).