Question

The mean of $-1,0,1$ and $4$ is_______

Answer 1

The given observations are $-1,0,1$ and $4$.

Number of observation $=4$

Now,

$\begin{array}{rcl}Mean& =& \frac{Sumofallobservations}{TotalNumberofobservations}\\ & =& \frac{-1+0+1+4}{4}\\ & =& \frac{4}{4}\\ & =& 1\end{array}$

Therefore, the mean of $-1,0,1$ and $4$ is $1$