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Finding Mean for Grouped Data When Class Intervals Are Not Given

The mean of t...

Question

The mean of the first five natural numbers is

A

5

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B

10

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C

3

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Solution

The correct option is C 3
The first five natural numbers are 1, 2, 3, 4, 5.
Sum of the observations in the dataset
= 1 + 2 + 3 + 4 + 5 = 15

$M e a n = \frac{S u m o f O b s e r v a t i o n s}{N u m b e r o f O b s e r v a t i o n s} = \frac{15}{5} = 3$

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Finding Mean for Grouped Data When Class Intervals Are Not Given

Standard X Mathematics

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