Question

22. If lower and upper quartile for a certain data
are 20 and 100 respectively, then which of the
following is quartile deviation for the data ? *
(1 Point)
60
80
40
50​

Answer 1

Answer:

60 is the answer of the question

Answer 2

Given :

Lower quartile (Q₁) = 20

Upper quartile (Q₂) = 100

To Find :

Quartile Deviation for the data

Solution :

If Q₁ is the lower quartile and Q₂ is the upper quartile for the given data set, then its quartile deviation can be calculated using the following formula -

    Quartile Deviation  =  $\frac{Q_2 - Q_1}{2}$

Here, Q₂ = 100 and Q₁ = 20

∴ Quartile Deviation  = $\frac{100 - 20}{2}$

                                   =  $\frac{80}{2}$

                                   =  40

Therefore, the quartile deviation for the data is 40.

Hence, option (c) is correct.