Question

The heights of 13 men in centimetres are given below. 162, 160,163, 160 , 165,187,170, 167, 174, 176, 178, 179, 178. How do I determine the mean of the heights correct to two decimal places?

Answer 1

Step 1

Write the data

162, 160,163, 160, 165,187,170, 167, 174, 176, 178, 179, 178.

Step 2:

Write the mean formula

`\begin{gathered} Mean\text{ = }\frac{Sum\text{ of numbers}}{total\text{ number of numbers}} \\ Mean\text{ = }\frac{162+160+163+\text{ 160+ }\frac{\placeholder{⬚}}{\placeholder{⬚}}165+187+170+167+174+176+178+179+178.}{13} \\ Mean\text{ = }(2199)/(13) \\ Mean\text{ = 169.15} \end{gathered}`

Mean = 169.15