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Standard X
Mathematics
Assumed Mean Method
Arithmetic me...
Question
Arithmetic mean for the given data is
Marks
No. of students
0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
50 - 60
5
10
25
30
20
10
A
55
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B
35
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C
2
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D
33
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Solution
The correct option is
D
33
Mean
=
Sum of
(
class mark
×
frequency
)
Sum of frequency
Mean
=
5
×
5
+
15
×
10
+
25
×
25
+
35
×
30
+
45
×
20
+
55
×
10
5
+
10
+
25
+
30
+
20
+
10
Mean
=
3300
100
=
33
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0
Similar questions
Q.
Calculate arithmetic mean salary from the following frequency distribution
X(Rs.in 000)
10-20
20-30
30-40
40-50
50- 60
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Y(Frequency)
2
3
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2
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Q.
Consider the table given below
Marks
0-10
10-20
20-30
30-40
40-50
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Number of Students
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The arithmetic mean of the marks given above is
Q.
Calculate arithmetic mean of the following data:
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:
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10-20
20-30
30-40
40-50
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:
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Q.
Calculate mean deviation about for the following data.
Class
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30-40
40-50
50-60
Frequence
6
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Q.
Calculate mean deviation about Median for the following data :
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