- Statistics (Mean, Median, Mode, Standard Deviation)Choice D
Let m be the mean, then:
$$ Sum=7m $$
then by increasing the mean by 7:
$$ New\ sum=7(m+4) $$
$$ =7m+28 $$
$$ =Sum+28 $$
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Let m be the mean, then:
$$ Sum=7m $$
then by increasing the mean by 7:
$$ New\ sum=7(m+4) $$
$$ =7m+28 $$
$$ =Sum+28 $$
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