What is the std of 1.69,1.7,1.69,1.71,1.68,1.69,1.68,1.7,1.67,1.68 ?

The std of 1.69,1.7,1.69,1.71,1.68,1.69,1.68,1.7,1.67,1.68 is 0.01197…

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std of 1.69,1.7,1.69,1.71,1.68,1.69,1.68,1.7,1.67,1.68

standard deviation

1.69, 1.7, 1.69, 1.71, 1.68, 1.69, 1.68, 1.7, 1.67, 1.68

0.01197 \dots

Solution steps

Compute the variance:

0.00014 \dots

Compute

σ (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 0.01197 \dots

0.01197 \dots

12 n C r 3

8 n C r 5

C (21, 3)

0.801, 0.081, 0.049, 0.017, 0.015, 0.011, 0.008, 0.007, 0.006, 0.005

10 C H OOSE 2

What is the std of 1.69,1.7,1.69,1.71,1.68,1.69,1.68,1.7,1.67,1.68 ?
The std of 1.69,1.7,1.69,1.71,1.68,1.69,1.68,1.7,1.67,1.68 is 0.01197…