Explanation
Step -1: Find the sum of first six natural numbers.
The first six natural numbers are 1,2,3,4,5,6
Sum of these observations=1+2+3+4+5+6
=21
Step -2: Find the mean of first six natural numbers.
Here, number of observations=6
∵Mean=Sum of observationsNumber of observations.
∴Mean of first six natural numbers=216
=3.5
Final Answer: Hence, the correct option is B.
Step - 1: Listing first 10 odd natural numbers
First 10 odd natural numbers = 1, 3, 5, 7, 9, 11, 13, 15, 17, 19
Step - 2: Calculating mean
We know that, mean of n numbers = Sum of n numbersn
∴ Mean of first 10 odd natural numbers,
M = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 1910
⇒ M = 10010 = 10
Thus, the mean of first 10 odd natural numbers is 10
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