Question Number 118775 by obaidullah last updated on 19/Oct/20
$$\mathrm{2},\mathrm{2},\mathrm{2},\mathrm{2},\mathrm{2} \\ $$$${X}=\frac{\mathrm{2}+\mathrm{2}+\mathrm{2}+\mathrm{2}+\mathrm{2}}{\mathrm{5}}=\frac{\mathrm{10}}{\mathrm{5}}=\mathrm{2} \\ $$$${V}=\frac{\left(\mathrm{2}−\mathrm{2}\right)^{\mathrm{2}} +\left(\mathrm{2}−\mathrm{2}\right)^{\mathrm{2}} +\left(\mathrm{2}−\mathrm{2}\right)^{\mathrm{2}} +\left(\mathrm{2}−\mathrm{2}\right)^{\mathrm{2}} +\left(\mathrm{2}−\mathrm{2}\right)^{\mathrm{2}} }{\mathrm{5}} \\ $$$${Variance}=\mathrm{0} \\ $$