Question

formula for calculation of quartile deviation is.​

Answer 1

Answer:

Q.D. = Q3 – Q1 / 2

So, to calculate Quartile deviation, you need to first find out Q1, then the second step is to find Q3 and then make a difference of both, and the final step is to divide by 2. This is one of the best methods of dispersion for open-ended data.

Answer 2

Answer:

Formally, the Quartile Deviation is equal to the half of the Inter-Quartile Range and thus we can write it as – Q d = Q 3 – Q 1 2 Q_d = \frac{Q_3 – Q_1}{2} Qd=2Q3–Q1 Therefore, we also call it the Semi Inter-Quartile Range. The Quartile Deviation doesn't take into account the extreme points of the distribution.