x = =2.67

XX X =0 =24 =120 =80 R=0 R=12 R=60 MD=0 MD=12 MD=17.14

Variance Sum of the squared deviations from the mean x = =8.67

XX =5 MD =1 s2s2 =2s2s2 =1

x =

=8.67 x2x2 mean=5

For the following numbers calculate the range, mean deviation, the variance and standard deviation =