For any two positive numbers a and b, their Standard Deviation is equal to:

Type: MCQ • Marks: 1

A. (a - b) / 2

B. (a + b) / 2

C. sqrt(a * b)

D. |a - b| / 2

Explanation

Mean = (a+b)/2. Deviations squared = ((a-b)/2)^2 for both. Mean square dev = ((a-b)/2)^2. SD = |a - b| / 2.

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UP TGT Mathematics

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