1.

Suppose values taken by a variable x are such that \[a\le {{x}_{i}}\le b\], where \[{{x}_{i}}\] denotes the value of x in the ith case for i = 1, 2, n. Then          [Kurukshetra CEE 1995, 2000]

A.                 \[a\le \text{Var}(x)\le b\]     
B.                 \[{{a}^{2}}\le \text{Var}(x)\le {{b}^{2}}\]
C.                 \[\frac{{{a}^{2}}}{4}\le \text{Var}(x)\] 
D.                 \[{{(b-a)}^{2}}\ge \text{Var}(x)\]
Answer» E.


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