The students in a college statistics class want to estimate what proportion of the students in their college own an ipod. they gather an srs of 500 students. they find that 187 of the students in the sample own an ipod. what is the numerical value of the sample proportion from the sample?

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?