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Standard X
Mathematics
Question
Find the mean of the following data, by using the assumed mean method.
Class Interval
0
−
10
10
−
20
20
−
30
30
−
40
40
−
50
Frequency
7
8
12
13
10
10
30
27.2
None of these
A
27.2
B
10
C
None of these
D
30
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Solution
Verified by Toppr
Answer:-
Class interval
Frequency (
f
i
)
x
i
=
lower limit + upper limit
2
f
i
x
i
0
−
10
7
5
35
10
−
20
8
15
120
20
−
30
12
25
300
30
−
40
13
35
455
40
−
50
10
45
450
Σ
f
i
=
50
Σ
f
i
x
i
=
1360
Mean =
Σ
f
i
x
i
Σ
f
i
=
1360
50
=
27.2
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Similar Questions
Q1
Find the mean of the following data, by using the assumed mean method.
Class Interval
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−
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−
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Frequency
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Q2
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