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how to use standard deviation, I don't really understand how to calculate and use the formula, someone can please give me an example with formula it would be great thank you so much. 
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43 votes
43 votes
how to use standard deviation, I don't really understand how to calculate and use the formula, someone can please give me an example with formula it would be great thank you so much. 

User Anton Dovzhenko
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1 Answer

21 votes
21 votes
First, for each data value, find out how far the value is from the mean by taking the difference of the value and the mean. Then, square all of those differences. Then, take the average of those squared differences. Finally, take the square root of that average.
User Beenish Khan
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