The first five prime numbers are 2, 3, 5, 7 and 11
M.D = ∑(x−x̄)n
n = 5
x̄=∑xn=2+3+5+7+115=285=5.6
M.D = (2−5.6)+(3−5.6)+(5−5.6)+(7−5.6)+(11−5.6)5
= (−3.6)+(−2.6)+(−0.6)+(1.4)+(5.4)5=13.65
Take the absolute value of all numbers in bracket
= 3.6+2.6+0.6+1.4+5.45=13.65
∴M.D=2.72
