Subtract 15 and 4 , double the difference, and then add two-thirds

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.

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

c.)

step-by-step explanation: