Question

Suponha que uma variável assume os valores: 11 – 8 – 7 – a – 16 – 10 Determine a de modo que a média aritmética seja igual 11.

Answer 1

a = 14

Explanation:

The mean is the sum of the values divided by the number of values.

`\begin{array}{rcl}\text{Mean}&= &(11 + 8 + 7 + a + 16 + 10)/(6)\\\\(52 + a)/(6)& = & 11\\52 + a & = & 66\\a & = & 66 - 52\\& = & \mathbf{14}\\\end{array}`