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If the variance of the data $2,4,5,6,8,17$ is 23.33 , then the variance of $4,8,10,12,16,34$ will be
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The correct answer is:
93.32
We find that each element of new data is 2 times of each element in old data.
Variance of old data $=23.33$
$\therefore$ variance of new data $=(23.33)(2)^2=93.32$
Variance of old data $=23.33$
$\therefore$ variance of new data $=(23.33)(2)^2=93.32$
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