Same chapter3 marksDifficulty: Medium
Why is the standard deviation preferred to the mean deviation as a measure of dispersion?
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3 marksDifficulty: Medium
Find the standard deviation of the first five natural numbers.
Original Khojo Papers practice question — not from a past board paper.
Answer
√2, about 1.414
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The mean is 3 and the squared deviations are 4, 1, 0, 1, 4, whose mean is 10/5 = 2, so the standard deviation is √2.
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