acer 2) Compare and contrast the 3 graphs shown at the right a) How are the graphs similar? How are they different? What is the most distinctive feature that distinguishes these three graphs from each other? Similar count Different 0 = 160 55 60 65 70 75 30 35 100 Exam Scores_Set 10 Most count distinctive feature 0 - 8 8 50 50 65 70 75 80 85 90 35 100 Exam_Scores_Bet_ F Circle Kcon b) The average exam score is the same for each set of data (D, E and F). What do you think the average is? c) Which of the statements below, if any, is a reasonable explanation for the differences in the graphs? Why? The graphs represent a single class after the teacher adjusted the grades. The teacher realized that some of the exam questions were not well written, so she adjusted the grades by adding points to the original exam scores. The graphs represent 3 different classes with teachers that have different grading standards. One is an easy grader. One is a really hard grader. The differences could be explained by whether the teachers allowed the students to work together on the exam and how much time the students were given to finish the exam. 3