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Home / Doubts and Solutions/CBSE/Class 10/Mathematics

If the mean of the following distribution is 27, then find the value of p.

Class

0-10

10-20

20-30

30-40

40-50

Frequency

8

p

12

13

10

Asked by Topperlearning User 4th June 2014, 1:23 PM
Answered by Expert
Answer:

Class

Class Marks (x)

Frequency (f)

fx

0-10

5

8

40

10-20

15

p

15p

20-30

25

12

300

30-40

35

13

455

40-50

45

10

450

= 43 + p

= 1245 + 15p

Mean =

 

Answered by Expert 4th June 2014, 3:23 PM
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