Mathematics - Statistics Question with Solution | TestHub

Let $\bar{X}$ and M.D. be the mean and the mean deviation about $\bar{X}$ of $n$ observations ${\mathrm{x}}_{\mathrm{i}},\mathrm{i}=1,2$,n. If each of the observations is increased by 5 , then the new mean and the mean deviation about the new mean, respectively, are :