What is the std of 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92 ?

The std of 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92 is 18.31068…

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std of 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92

standard deviation

21, 31, 36, 45, 49, 58, 61, 63, 64, 65, 66, 68, 71, 73, 74, 78, 81, 92

18.31068 \dots

Solution steps

Compute the variance:

335.28104 \dots

Compute

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 18.31068 \dots

18.31068 \dots

7, 15, - 7, - 4, - 1

6 c 4

10 n C r 0

2, - 2, - 42

C (6, 5)

What is the std of 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92 ?
The std of 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92 is 18.31068…