Question

Find the mean of the distribution:
Class
1-3
3-5
5-7
7-9
Frequency
9.
22
27
17​

Answer 1

Answer:

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Answer 2

Answer:

answer is 5.5 ans

Step-by-step explanation:

We first, find the class mark x

of each class and then proceed as follows.

Class Class Marks (x

i

) Frequency (f

i

) f

i

x

i

1-3 2 9 18

3-5 4 22 88

5-7 6 27 162

7-10 8.5 17 144.5

Σf

i

=75 Σf

i

x

i

=412.5

Mean,

(

x

)=

Σf

i

Σf

i

x

i

=

75

412.5

=5.5

Therefore, mean of the given distribution =5.5.