Construct a frequency polygon using the distribution of grouped scores constructed in given Problem. Is the curve symmetrical or positively or negatively skewed?

Problem-
A small eastern college uses the grading system of 0-4.0, with 4.0 being the highest possible grade. The scores shown here are the grade point averages of the students currently enrolled as psychology majors at the college.

a. Construct a frequency distribution of grouped scores with approximately 10 intervals.

b. Construct a histogram of the frequency distribution constructed in part a.

c. Is the distribution skewed or symmetrical? If skewed, is it skewed positively or negatively?

d. Construct a stem and leaf diagram with the last digit being a leaf and the first digit a stem. Repeat stem values five times.

e. Which diagram do you like better, the histogram of part b or the stem and leaf diagram of part d? Explain.