SOLUTION: you and your friends have just measured the heights of your dogs (in milimeters). the heights(at the shoulder)are :600mm, 470 mm, 170mm, 300mm, 200mm. find out the mean the varianc

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Question 1154146: you and your friends have just measured the heights of your dogs (in milimeters). the heights(at the shoulder)are :600mm, 470 mm, 170mm, 300mm, 200mm. find out the mean the variance and the standard deviation
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
First find mean (600+ 470+170 + 300 + 200)/5
Mean =348
Find variance
Find the difference between observation and mean
d
600-348 = 252
470-348 = 122
170-348 = -178
300 -348 = -48
200-348 = -148
Variance %28sigma%29%5E2 = ((252)^2 +(122)^2+(-178)^2+(-48)^2+(-148)^2)/5
%28sigma%29%5E2 = 26856

Standard deviation %28sigma%29= sqrt%2826856%29
=163.88