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03-04-2018
Mathematics

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What is the standard deviation of 111, 132, 186

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perixwinkle perixwinkle

03-04-2018

The mean:
111+132+186
429/3=143
Subtract mean:
111-143= -32²= 1,024
132-143=-11²= 121
186-143= 43²= 1,849
Now find the mean again:
1,024+121+1,849
2,994/3= 998
Now square root:
√998≈31.591138

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