Many people travel to the south rim of the Grand Canyon on vacation each year. The National Parks Service keeps records of the number of vehicles entering the park.
According to their website, the following table lists the total vehicles that entered the park each month from the beginning of April to the end of September in 2015.
Use the table to answer the questions below.
a. Add a “Relative Frequency” column to the table and determine all of the entries in that column. Round your entries to the nearest thousandth.
b. Add a “Cumulative Frequency” column to the table and determine all of the entries in that column.
c. Add a “Relative Cumulative Frequency” column to the table and determine all of the entries in that column. Round your entries to the nearest thousandth.
d. What was the average monthly number of vehicles entering the Grand Canyon south rim over this 6-month period? Round up to the nearest whole number.
e. What was the median number of vehicles?
f. Use your completed chart. What percent of the total number of vehicles over the 6-month period entered in July?
g. Use your chart. Approximately what percent of all vehicles entering the park did so in April, May, and June combined? Where would you find this information in your chart?