Grahamsville High School recently polled its teachers to see how many miles they drive to work each day. At the left is a stem-and- leaf plot of the results.
a. How many teachers were polled?
b. Find the mean to the nearest mile.
c. Find the median.
d. Find the mode(s).
e. Find the range.
f. Find the four quartiles.
g. What percent of the teachers travel more than 38 miles to work?
h. Find the interquartile range.
i. What percent of the teachers travel from 38 to 57 miles to work