Question

If the third quartile is 30 and median is 22 find the coefficient of quartile deviation

Answer 1

Answer:

0.36

Step-by-step explanation:

Assuming symmetrical Distribution :

Q₁ = ?

Q₂ = 22  ( Median)

Q₃ = 30

Q₂ = (Q₁ + Q₃)/2

=> 22 = (Q₁ + 30)/2

=> Q₁  = 14

coefficient of quartile deviation   =  (Q₃ - Q₁)/(Q₃ + Q₁)

= (30 - 14)/(30  + 14)

= 16/44

= 0.36

the coefficient of quartile deviation  = 0.36