X (x - x) |x - x1 flx- x] A(x - X ) 2 f ( x ) 24 -96 2.37857 2.37857 57.0857 135.7824 16 384 9,216 2 56 -112 -0.37857 0.37857 21.2000 8.0257 4 224 12,544 - ] 33 -33 0.621429 0.621429 20.5071 12.7437 33 1,089 17 1.621429 1.621429 27.5643 44.6935 0 8 8 2.621429 2.621429 20.9714 54.9751 64 210 3 2 4.621429 4.621429 9.24286 42.7152 18 36 Total 140 -227 6.728571 12.24286 156.5714 298.9357 31 667 22,9499 Mean: x = Efx -227 Ef 140 -1.62143 Variance: $2 _ LF(x -x) 2 298.9357 Ef - 1 (140 - 1) 2.1506 $2 _ nEfx2 - ( [fx)2 140 * (667) - 51,529 n (n - 1) 140(140 - 1) = 2.1506 Standard Deviation (S): S = V($2) = (2.1506) = 1.46649 Average Deviation (AD): AD = Eflx - x1 156.5714 n 140 = 1.11837