Using exactly four eights, add arithmetical symbols between the eights to make each of the target numbers. You may use plus, minus, times, and divide symbols, as well as parentheses and brackets for grouping. 8 8 8 8 = 56 8 8 8 8 = 192 8 8 8 8 = 10

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?