The variance of 20 observations is 5 . If each
\( \mathrm{P} \) obs...
The variance of 20 observations is 5 . If each
\( \mathrm{P} \) observation is multiplied by 2 , then the variance of
W the resulting observations is
(1) 10
(2) 20
(3) 25
(4) 12.5
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