Which grouping can be used to represent the product of 3 × 9?

Step-by-step explanation:

The answer is 27 but idk what kind of grouping

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.