7 x 45 = 7 x 3 x ? What should replace the ? In the number sentence

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.

first one because it can't have a fraction in it

step-by-step explanation: