Question

Quartile deviation for a frequency distribution is

• A. $Q = Q _ { 3 } - Q _ { 1 }$
• B. $Q = \frac { 1 } { 2 } \left( Q _ { 3 } - Q _ { 1 } \right)$
• C. $Q = \frac { 1 } { 3 } \left( Q _ { 3 } - Q _ { 1 } \right)$
• D. $Q = \frac { 1 } { 4 } \left( Q _ { 2 } - Q _ { 1 } \right)$

Answer 1

Answer: (B)

$Q = \frac { 1 } { 2 } \left( Q _ { 3 } - Q _ { 1 } \right)$

Answer 2

It is obvious.