Why is the numbers 2,-3,5,0,-1 a integer number

Because they dont have variables

you need to show us the graph.

step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.