91Ó°ÊÓ

The mean of a set of data is the quotient of the sum of observations and the number of observations.

The median is the middle number in a sorted, ascending, or descending, set of numbers.

The mode of the set of data is the observation that occurs highest times.

The sum of observation for the given set of data is:

$−1+0+5+2−2+0−1+2−1+0=4$

And, the total number of observations is 10.

So, the mean of the given set of data is $\frac{4}{10}=0.4$.

The given set of data in ascending order is $\left\{−2,−1,−1,−1,0,0,0,2,2,5\right\}$. The total number of observations is 10, i.e., even.

The median of the set of data is the mean of the fifth and sixth observations.

$\frac{0+0}{2}=0$

So, the median of the given set of data is 0.

The observation -1 and 0 in the set occurs most of the time. So, the mode of the given set of data is -1 and 0.

Therefore, the mean, median, and mode of the set of data $\left\{−2,−1,−1,−1,0,0,0,2,2,5\right\}$are 0.4, 0, -1, and 0 respectively.