What is the median class for the following data given below?
Height(cm)
$0 - 10$
$10 - 20$
$20 - 30$
$30 - 40$
$40 - 50$
$50 - 60$
Number of players
$3$
$6$
$2$
$5$
$10$
$4$

0 - 10

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10 - 20

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20 - 30

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30 - 40

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Solution

The correct option is D $30 - 40$
To find the median class:
First add the total number of frequencies.
Here, $f = 30$
So, $\frac{f}{2} = \frac{(T o t a l n u m b e r o f f r e q u e n c y)}{2}$
$= \frac{(30)}{2}$
$= 15$
The cumulative frequency to which $\frac{f}{2}$ belongs, the value $15$ lies in the class interval $30 - 40$ from the cummulative frequency table.

So the median class is $30 - 40$

Suggest Corrections

Number of cars	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$7$	$9$	$13$	$21$	$12$	$15$	$4$	$12$

Height(cm)	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$
Number of players	$3$	$6$	$2$	$5$	$10$	$4$

Time(min)	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$
Running race(km)	$10$	$20$	$3$	$4$

Class	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70	70 - 80
frequency	5	8	7	12	28	20	10	10