Mean of Marks Distribution (Jee Mains) | ExamDuo
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Central Tendency Measures
Medium
Mean of Marks Distribution
If for some x ∈ R, the frequency distribution of the marks obtained by 20 students in a test is:
Marks
2
3
5
7
No. of students
(
x
+
1
)
2
2
x
−
5
x
2
−
3
x
x
Then the mean of the marks is:
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SELECT ONE OPTION
A
2.5
B
3.0
C
2.8
D
3.2
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