First slide

Introduction to statistics

Question

If the quartile deviation of a set of observations is 10 and the third quartile is 35, then the first quartile is

Moderate

A

24
B

30
C

17
D

15

Solution

We have,
$\{\frac{Q_{3} - Q_{1}}{2} = 10 and Q_{3} = 35\} \Rightarrow Q_{1} = 15$

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