The Cold Spring High School student government polled randomly selected seniors and asked them how much money they spent on gas in the last week. The following stem-and-leaf plot shows the data they collected.

a. How many students were polled?
b. Find the mean to the nearest cent.
c. Find the median.
d. Find the mode.
e. Find the range.
f. Find the four quartiles.
g. What percent of the students spent $53 or more on gas?
h. Find the interquartile range.
i. What percent of the students spent from $53 to $75 on gas?
j. Find the boundary for the lower outliers.
k. Find the boundary for the upper outliers.
l. How many outliers are there?
m. Draw a modified boxplot.

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