First slide

Introduction to statistics

Question

The median of the following marks of the students in a class, is $34, 32, 48, 38, 24, 30, 27, 21, 35$

Moderate

A

32
B

34
C

38
D

30

Solution

Arranging the data in ascending order of magnitude, we have
$21, 24, 27, 30, 32, 34, 35, 38, 48$
Since there are 9, an odd number of items. Therefore, median is the value of ${(\frac{9 + 1}{2})}^{th}$ observation i.e., 32.

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