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Class XII
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Class X
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Chapter 13
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Mean of grouped data
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Quiz
Class X
Quick check : Mean
6 questions
Question 1 of 6
Score:
0
/ 0
Direct mean formula:
A
∑
x
i
/
n
\sum x_i / n
∑
x
i
/
n
B
∑
f
i
x
i
/
∑
f
i
\sum f_i x_i / \sum f_i
∑
f
i
x
i
/
∑
f
i
C
∑
f
i
/
n
\sum f_i / n
∑
f
i
/
n
D
n
/
∑
f
i
n / \sum f_i
n
/
∑
f
i
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