Question

find the range, standard deviation and range of 8 10 22 18 17 11 15 28 16 16

Answer 1

Range:

$Range=Maximum-Minimum=28-8=20$

Mean:

$Mean=\frac{8+10+22+18+17+11+15+28+16+16}{10}=16 .1$

Standard Deviation:

$\sigma=\sqrt{\frac{\Sigma (X-\bar{X})^2}{n}}$

$\sigma=\sqrt{\frac{310.9}{10}}=5.58$