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Statistics — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSStatistics1 Mark
Question
The mean of first n natural numbers is:
✓

Answer

  1. $\frac{\text{n}+1}{2}$
Solution:
The mean is equal to the sum of all the values in the data set divided by the number of values in the
data set. Sum of first n natural numbers is $\frac{\text{n}(\text{n}+1)}{2}$
So, mean of first n natural numbers is $\frac{\frac{\text{n}(\text{n}+1)}{2}}{\text{n}}=\frac{(\text{n}+1)}{2}$

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