What is the std of 20,16 3/4 ,13 1/2 ,10 1/4 ,7 ?

The std of 20,16 3/4 ,13 1/2 ,10 1/4 ,7 is 6.72123…

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std of 20,16 3/4 ,13 1/2 ,10 1/4 ,7

standard deviation

20, 16 \frac{3}{4}, 13 \frac{1}{2}, 10 \frac{1}{4}, 7

6.72123 \dots

Solution steps

Compute the variance:

45.175

Compute

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 6.72123 \dots

6.72123 \dots

C (9, 4)

22, 26, 31, 31, 33, 33, 36, 36, 37, 37, 38, 38, 39, 41, 42, 42, 43, 43, 44, 44, 44

26 C 10

7 n P r 7

4 n C r 1

What is the std of 20,16 3/4 ,13 1/2 ,10 1/4 ,7 ?
The std of 20,16 3/4 ,13 1/2 ,10 1/4 ,7 is 6.72123…