Which class-interval has the maximum frequency?

0 - 10

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30 - 40

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10 - 20

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40 - 50

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Solution

The correct option is B $30 - 40$
From the given histogram, the frequency of class interval:
$0 - 10$ is $15$
$10 - 20$ is $10$
$20 - 30$ is $20$
$30 - 40$ is $25$
$40 - 50$ is $10$
$50 - 60$ is $5$ .

As the height of the bar drawn for $30 - 40$ is the highest and is equal to $25$ , this interval has the maximum frequency.

Hence, option $B$ is correct.

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Similar questions

If the cumulative frequency for the class interval (50-60) is 92, then find x

$\begin{matrix} Class Interval & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 Frequency & 12 & 20 & x & 18 & 10 & 6 \end{matrix}$

22

10 > y > x

y =

Class interval	0-10	10-20	20-30	30-40	40-50	Total
Frequency	5	8	10	x	y	30

25

p

Class interval	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$
Frequency	$5$	$18$	$15$	$p$	$6$

Calculate mean and standard deviation :

$\begin{matrix} Class Interval & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 Frequency & 8 & 13 & 16 & 8 & 5 \end{matrix}$

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$
Frequency	$5$	$10$	$20$	$5$	$10$

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