Question

The mean of $100,200,300,400,500$ is_____.

Answer 1

The formula to find the mean is

$\mathrm{Mean}=\frac{\mathrm{Sum}\mathrm{of}\mathrm{all}\mathrm{observations}}{\mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{observations}}$

The given data is $100,200,300,400,500$,

Number of observation $\left(n\right)=5$

$\begin{array}{rcl}\mathrm{Mean}& =& \frac{100+200+300+400+500}{5}\\ & =& \frac{1500}{5}\\ & =& 300\end{array}$

Hence, the mean of the given data is $300$.