For a set of numbers, the sum of squared deviations from the arithmetic mean is 100 and n=10. The variance is:
A. 11.11
B. 10
C. 1
D. 9
Answer: Option B
Solution (By JKSSB Mock Tests)
Population variance = 100/10 = 10. Sample variance would be 100/9≈11.11, but question likely assumes population. I'll specify 'if data is population', but not specified. I'll assume population for simplicity.
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