Paper 1 · Research Aptitude
UGC NET December 2023 (13.12.2023) Shift-I
Identify the measures of dispersion. Choose the correct answer from the options given below.
- 1. Range
- 2. Quartile deviation
- 3. Sum of the deviations about mean
- 4. Standard deviation
A1, 2 and 3 only
B2, 3 and 4 only
C1, 2 and 4 only ✓ Correct
D1, 3 and 4 only
Correct answer: (C) 1, 2 and 4 only — Range, quartile deviation and standard deviation are measures of dispersion, so the answer is 1, 2 and 4.
Explanation
★Range, quartile deviation and standard deviation are measures of dispersion, so the answer is 1, 2 and 4.
★Dispersion measures describe how spread out the data values are.
★Range is the difference between the largest and smallest value.
★Quartile deviation is half the gap between the first and third quartiles.
★Standard deviation measures the average spread around the mean.
★The sum of deviations about the mean is always zero, so it cannot measure dispersion.
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