# statistics

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Find the range and the variance (correct to one decimal place). 78,91,93,93,99

• statistics -

range=max-min=99-78=21
sample mean=(78+91+93+93+99)/5=90.8
(78-90.8)^2=163.84
(91-90.8)^2=0.04
(93-90.8)^2=4.84
(99-90.8)^2=67.24
sample variance=(163.84+0.04+4.84+4.84+67.24)/4=60.2

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