2) 16 + -7

Step by step please

9

Step-by-step explanation:

The rules that you need to know for this question are:

- & - = +

+ & - = -

+ & + = +

So for this question we have 16 + -7 so we need to use the + & - rule. Therefore a plus and a minus make a minus so we do 16-7 which is 9

answer: b.

step-by-step explanation:

it is b. cause the equations are put in the right category

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.