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Subject :IMO    Class : Class 7

The mode and median of the following data 21, 23, 25, 23, 21, 24, 22, 20, 23 respectively, are

A 23, 23
B 21, 23
C 25, 21
D 23, 21


Ans 1:

Class : Class 7
It is wrong actually

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
This is wrong

Ans 4:

Class : Class 7
(A) is the correct option.Here 23 is the most frequent observation (Frequency=3), so it is the mode.Arranging the data in an ascending order, 20,21,21,22,23,23,23,24,25; so here 23 is the middle-most observation,thus it is the median of the following data.

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