The figure below shows a cumulative relative frequency plot of 40 scores on a test given in a Statistics class. Which of the following conclusions can be made from the graph? O The median test score is less than 75. 100.00% Stat test grades 80.00% 60.00% 40.00% 20.00% 0.00% 50 BO 70 90 100 There is greater variability in the lower 20 test scores than in the higher 20 test scores. O Sixty percent of the students had a test score above 80. The horizontal nature of the graph for test scores of 60 and below indicates that those scores occurred most frequently.