If you had the data on the cumulative GPA of each student at the end of the spring semester in 2018, which measure of average would be the most meaningful mean, median, mode? Explain.

15. Your class rank in 2018 was 78 out of 456 students. In 2019 your class rank was 67 out
of 501 students.
a. In which year did you have the higher percentile ranking.
b. If you had the data on the cumulative GPA of each student at the end of the spring semester in 2018, which measure of average would be the most meaningful mean, median, mode? Explain.

Part 3 of 2
15. In a class of 18 students there are 11 math majors and 7 computer science majors. Four
students are randomly picked to prepare a demonstrate on the use of a graphing
calculator.
a. If one person in the class is chosen at random to draw the names out of a hat, what
is the probability that the person drawing the names is a math major?
b. How many ways can the group of students be formed if there are no restrictions on
composition?
c. How many ways can three math majors be chosen?
d. How many ways can 1 computer science major be chosen?
e. What is the probability that the random selection of the four-person group will
result in three math majors and 1 computer science major?