Answer
Variance:$61986.22 \ hic^2.$
Standard deviation:$248.97 \ hic$
Range:$779 \ hic$.
Work Step by Step
By using the results from before: $\mu=703.67 \ hic.$
Variance=$\frac{\sum (x-\mu)^2}{n}=\frac{(774-703.67)^2+(649-703.67)^2+...+(612-703.67)^2}{6}=61986.22 \ hic^2.$
Standard deviation=$\sqrt{variance}=\sqrt{61986.22 \ hic^2}=248.97 \ hic$
Range=maximum value-minimum value=$1210 \ hic-431 \ hic=779 \ hic$.
