A study compared middle school student backpacks for price, capacity, and whether they had wheels. The data below is a stem and leaf plot of price (in $) for 28 different backpacks along with some summary measures needed for calculations. Use 2 significant decimal places for your answer. Stem Leaf 85 800 78 Sum(x) Sum(x^2) $37 700013 657 $14.25 $48 600000002 555568 5002 48 $85 Q1 Q3 N What is the range for the backpack data? 815 represents $85 1770 114520 55.75 70.00 28