During science class, groups measure out different volumes of vinegar. The line plot below shows the amount of vinegar used by 121212 groups, rounded to the nearest \dfrac12 \text{ mL} 2 1 mLstart fraction, 1, divided by, 2, end fraction, start text, space, m, L, end text.

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?