x̄ = 14+15+16+17+18+196=996\frac{14+15+16+17+18+19}{6} = \frac{99}{6}614+15+16+17+18+19=699 = 16.5
M . D = (14−16.5)+(15−16.5)+(16−16.5)+(17−16.5)+(18−16.5)+(19−16.5)6\frac{(14-16.5)+(15-16.5)+(16-16.5)+(17-16.5)+(18-16.5)+(19-16.5)}{6}6(14−16.5)+(15−16.5)+(16−16.5)+(17−16.5)+(18−16.5)+(19−16.5)
M.D = (−2.5)+(−1.5)+(−0.5)+(0.5)+(1.5)+(2.5)6\frac{(-2.5)+(-1.5)+(-0.5)+(0.5)+(1.5)+(2.5)}{6}6(−2.5)+(−1.5)+(−0.5)+(0.5)+(1.5)+(2.5)
Taking the absolute value of the deviations
M.D = 2.5+1.5+0.5+0.5+1.5+2.56\frac{2.5+1.5+0.5+0.5+1.5+2.5}{6}62.5+1.5+0.5+0.5+1.5+2.5
M.D = 96\frac{9}{6}69 = 1.5
