xThe data is given 2,2,1,12,8.
1. The mean of the data is
[tex]\bar{x}=\frac{2+2+1+12+8}{5}=\frac{25}{5}=5[/tex]
2. To determine the standard deviation .
Then substitute the values in the standard deviation formula,
[tex]s=\sqrt[]{\frac{\Sigma(x-\bar{x})^2}{n-1}}=\sqrt[]{\frac{92}{5-1}}=4.8[/tex]
Hence the standard deviation is 4.8.
