Zenaida is shopping and wants to purchase a $320 stereo system. the store is offering an incentive of 10 to 30 percent off when you spin the discount wheel. zenaida spins the wheel and receives 20 percent off. how much will the stereo system cost? '

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?