What will be the class interval for the given mid values
5 10 15 20 25 30 35 40.

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Solution

Mid value Class interval

5 2.5-7.5

10 7.5-12.5

15 12.5-17.5

20 17.5-22.5

25 22.5-27.5

30 27.5-32.5

35 32.5-37.5

40 37.5-42.5

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Similar questions

Q. Write the modal class for the following frequency distribution:

Class-interval:	10−15	15−20	20−25	25−30	30−35	35−40
Frequency:	30	35	75	40	30	15

Draw a histogram of the following data:

$\begin{matrix} Class interval : & 10 - 15 & 15 - 20 & 20 - 25 & 25 - 30 & 30 - 35 & 35 - 40 Frequency : & 30 & 98 & 80 & 58 & 29 & 50 \end{matrix}$
Draw a histogram representing the above data.

Q. Find the mode of the following distribution.

(i)

Class-interval:	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

(ii)

Class-interval:	10−15	15−20	20−25	25−30	30−35	35−40
Frequency:	30	45	75	35	25	15

(iii)

Class-interval:	25−30	30−35	35−40	40−45	45−50	50−55
Frequency:	25	34	50	42	38	14

Q. The following are the daily expeditures (in

R s

) of

30

student in a school.

Ependiture (in $R s$ )	No. of students
$10 - 15$	$3$
$15 - 20$	$5$
$20 - 25$	$10$
$25 - 30$	$6$
$30 - 35$	$4$
$35 - 40$	$2$
Total	$30$

What is the upper-limit of the class interval

30 - 35

Q. Find the mean of the following frequency table by step-deviation method: [3 MARKS]

\begin{matrix} C l a s s i n t e r v a l & F r e q u e n c y 10 - 15 & 5 15 - 20 & 6 20 - 25 & 8 25 - 30 & 12 30 - 35 & 6 35 - 40 & 3 \end{matrix}

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Mid value	Class interval
5	2.5-7.5
10	7.5-12.5
15	12.5-17.5
20	17.5-22.5
25	22.5-27.5
30	27.5-32.5
35	32.5-37.5
40	37.5-42.5

What will be the class interval for the given mid values5 10 15 20 25 30 35 40.

Mid value Class interval 5 2.5-7.5 10 7.5-12.5 15 12.5-17.5 20 17.5-22.5 25 22.5-27.5 30 27.5-32.5 35 32.5-37.5 40 37.5-42.5

What will be the class interval for the given mid values
5 10 15 20 25 30 35 40.

Mid value Class interval

5 2.5-7.5

10 7.5-12.5

15 12.5-17.5

20 17.5-22.5

25 22.5-27.5

30 27.5-32.5

35 32.5-37.5

40 37.5-42.5