Determine the standard deviation using mean method — task. Mathematics State Board, Class 10.

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Calculate the standard deviation of the following observations using mean method.

\(x\)	\(2\)	\(4\)	\(6\)	\(8\)	\(10\)	\(12\)	\(14\)	\(16\)
\(f\)	15	5	8	25	18	14	9	2

Answer:

The standard deviation of the data is.

[Note: Enter the answer rounded to two decimal places.]

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10. Determine the standard deviation using mean method