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NCERT Exemplar Solutions Class 7 Mathematics Solutions for Data Handling - Exercise in Chapter 3 - Data Handling
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The marks in a subject for 12 students are as follows:
31, 37, 35, 38, 42, 23, 17, 18, 35, 25, 35, 29.
For the given data, what is the mean?
Answer:
Given data is 31,37, 35, 38, 42, 23,17,18, 35, 25, 35, 29.
Rearranging the given data in ascending order,
17,18, 23, 25, 29, 31,35, 35, 35, 37, 38, 42
\text { Mean= } \frac{17+18+23+25+29+31+35+35 +35+37+38+42}{12} \\ =\frac{365}{12}=30.41
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