how do i use standard deviation??

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please help me with standard deviation i dont understand how to use it

Aug 10th, 2015

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

you need to use standard deviation while calculating the scores range of data as  it helps in the data comparison and test for accuracy.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Aug 10th, 2015

thank you. and yes i still need some help... how would i used it? what is the process of using it. 

Aug 10th, 2015

get the summation of the sample mean divide by the tooal number of the population , then get the square root

Aug 11th, 2015

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Aug 10th, 2015
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Aug 10th, 2015
Sep 24th, 2017
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