1. The frequency distribution shows a summary of the scores from a Mathematics exam at a local high school. Twenty students took the exam. Exam Scores Frequency Relative Cumulative Cumulative Frequency Frequency Relative Frequency 50 to less than 60 0.05 0.05 60 to less than 70 0.15 4 0.20 70 to less than 80 4 0.20 8 0.40 80 to less than 90 --J 0.35 15 0.75 30 to less than 100 0.25 20 a. Complete the frequency distribution above by including columns for relative frequency , cumulative frequency, and cumulative relative frequency. b. What is the class width? 10 . What is the midpoint of the class with the highest frequency? 85 d. How many students scored between 70 to less than 80? 4 e. What percentage of students scored between 80 to less than 90? 35% f. Construct a histogram. Frequency 50 to less than 60 60 to less than 70 70 to less than 80 80 to less than 90 90 to less than 100 g. The shape of the histogram shows the data to be negatively skewed h. According to the histogram, the class with the largest percentage of exam scores is_ _? 80 to less than 90 class i . Construct an ogive. What is the approximate percentage of students that scored less than 85? 80%