If standard deviation of a set of observation is 8 and if each observation is divided by ' -2 ' ....

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If standard deviation of a set of observation is 8 and if each observation is divided by ' -2 ' the standard
\( \mathrm{P} \)
deviation of the new set of observations will be
W
(1) -4
(2) -8
(3) 8
(4) 4


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