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Byju's Answer

Standard VI

Mathematics

Problems Based on Application of Average in Everyday Life

What is the a...

Question

What is the average head count in 3 sections having 20 , 30 and 40 students respectively?

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37.5

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Solution

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Marks obtained in a test by X standard students of two sections A and B are given below:

Marks

No. of students in

Section A

No. of students in

Section B

25 – 30

30 – 35

35 – 40

40 – 45

45 – 50

Determine: (i) Which section’s performance is better? And (ii) Which section’s performance is more variable?

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	$30$

Find the class-marks of

20 - 25

and

25 - 30

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. 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 class-size

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	$30$

How many student spend daily between

20

and

25

rupees?

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