Question 63

What is the average of the first 13 odd numbers?

Solution

The first 13 odd numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25.

Average = $$\frac{sum\ of\ data}{number\ of\ data}$$

= $$\frac{1+3+5+7+9+11+13+15+17+19+21+23+25}{13}$$

= $$\frac{169}{13}$$

= 13

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