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Direct Method of Finding Mean

The mean of t...

Question

The mean of the following distribution is 52 & the frequency of class interval is Find

A

5

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B

4

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C

8

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D

12

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E

2

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Solution

The correct option is B
4

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Similar questions

Q. The mean of the following distribution is

15

. Find the value of

a

.

Class Interval	$5$	$10$	$15$	$20$	$25$
Frequency	$6$	$a$	$6$	$10$	$5$

Q. The mean of the following frequency distribution is

Class interval	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50
Frequency	4	6	10	16	14

Q. Find the mean of the following frequency distribution:

Class-interval:	0-10	10-20	20-30	30-40	40-50
No. of workers f:	7	10	15	8	10

Q. The mean of the following distribution is 52 and the frequency of class interval 30 - 40 is 'f'. Find 'f'.

\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 - 20 & 5 20 - 30 & 3 30 - 40 & f 40 - 50 & 7 50 - 60 & 2 60 - 70 & 6 70 - 80 & 13 \end{matrix}

Q. If the mean of the following frequency distribution is 18 , find the missing frequency .

Class interval : 11-13 13-15 15-17 17-19 19-21 21-23 23-25

Frequency: 3 6 9 13 f 5 4

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