please answer will mark as brainliest
Attachments:

Answers
Answered by
1
Answer:
which class this question belong
dear.
Answered by
0
Answer:
Class Interval Mid Value
x
i
Frequency
f
i
f
i
x
i
11 - 13 12 3 36
13 - 15 14 6 84
15 - 17 16 9 144
17 - 19 18 13 234
19 - 21 20 f 20 f
21 - 23 22 5 110
23 - 25 24 4 6
∑f=40+f ∑fx=704+20f
Given : Mean =18
We know, Mean (
x
)=
Σf
Σfx
⟹18=
40+f
704+20f
⟹18(40+f)=704+20f
⟹720+18f=704+20f
⟹720−704=20f−18f
⟹2f=16
⟹f=8
Similar questions
Science,
2 months ago
Math,
2 months ago
Hindi,
3 months ago
Biology,
11 months ago
Accountancy,
11 months ago