The variance of sample data 10 10.19.7 9.9 10.3 is the mean of data 1-20-11, is the variance s #; yes

The variance of sample data 10 10.19.7 9.9 10.3 is the mean of data 1-20-11, is the variance s #; yes

(1) The average is (10 + 10.1 + 9.7 + 9.9 + 10.3) / 5 = 10
s²=1/5*[(10-10)^2+(10.1-10)^2+(9.7-10)^2+(9.9-10)^2+(10.3-10)^2]
=1/5*[0+0.01+0.09+0.01+0.09]
=1/5*0.2
=1/25
(2) The average is (1-2 + 0-1 + 1) / 5 = - 1 / 5 = - 0.2
s²=1/5*[(1+0.2)^2+(-2+0.2)^2+(0+0.2)^2+(-1+0.2)^2+(1+0.2)^2]
=1/5*[1.44+3.24+0.04+0.64+1.44]
=1/5*6.8
=1.36

Elden Ring Premiere

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