A psychologist administered an aggression scale to a sample of high school girls. Scores on the scale can range from 20 to 80. Fifty is considered an average score; higher scores mean more aggression. Twelve girls had scores in the 20–29 range; 33 were 30–39; 57 were 40– 49; 62 were 50–59; 19 were 60–69; and 8 had scores in the 70–79 range. Graph the results and comment on the shape of the graph.