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February 28, 2015

February 28, 2015

Posted by **Anonymous** on Thursday, August 25, 2011 at 3:46pm.

- statistics -
**Mgraph**, Thursday, August 25, 2011 at 6:52pmrange=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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