Construct an ogive that represents the following data regarding the students' scores on a recent exam for a Statistics class. Exam Scores Class Frequency 45.5–53.4 3 53.5–61.4 8 61.5–69.4 4 69.5–77.4 10 77.5–85.4 9 Step 1 of 5 : Find the lower class boundary for the third class.