##### Need statistics help with Population Standard Deviation

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The 6  participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:

4 ,  0 ,  5 ,  0 ,  2 ,  1

Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal place

Nov 18th, 2015

Thank you for the opportunity to help you with your question!

Mean = (4+0+5+0+2+1)/6 = 2

deviations = 4-2    0-2    5-2    0-2    2-2     1-2

=    2        -2     3      -2      0        -1

deviations square = 4      4       9      4       0       1

total of dev square = 22

SD = sqrt (total of dev square/number of items)

= sqrt (22/6)

= sqrt (3.666)

=  1.914

Please let me know if you need any clarification. I'm always happy to answer your questions.
Nov 18th, 2015

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Nov 18th, 2015
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Nov 18th, 2015
Oct 19th, 2017
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