How to Calculate Standard Deviation - Easycalculation

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How to Calculate Standard Deviation?
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To Find the Standard Deviation, follow the below
steps Step 1 Find the mean. Step 2 Take each
number, subtract the mean and square the
result. Step 3 Calculate the sum of squared
differences Step 4 Calculate the standard
Deviation Formula
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Step 1 Find the mean Given Numbers 10, 20,
30, 40, 50 1020304050
_______________
5
150 _____ 30
5
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Step 2 Take each number, subtract the mean and
square the result (10-30)2 (-20)2
400 (20-30)2 (-10)2 100
(30-30)2 (0)2 0 (40-30)2
(10)2 100 (50-30)2 (20)2 400
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Step 3 Calculate the sum of squared
differences 400 100 0 100 400
1000
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Step 4 Calculate the Standard Deviation
v(1000) / (5-1)) v ((1000)
/ (4)) v250 S 15.811
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