Question

The mean of 1,1,2,2,3,3,4,4,5,5,6,6,7,7

Answer 1

Answer:

$\frac{1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7}{14} \\ = \frac{2(1 + 2 + 3 + 4 + 5 + 6 + 7)}{14} \\ \frac{2(28)}{14} \\ = 4$