Chapter 1: Q. 26 (page 25)
Angry people and heart disease People who get angry easily tend to have more heart disease. That鈥檚 the conclusion of a study that followed a random sample of people from three locations for about four years. All subjects were free of heart disease at the beginning of the study. The subjects took the Spiel burger Trait Anger Scale test, which measures how prone a person is to sudden anger. Here are data for the people in the sample who had normal blood pressure. CHD stands for 鈥渃oronary heart disease. 鈥漈his includes people who had heart attacks and those who needed medical treatment for heart disease.

Do these data support the study鈥檚 conclusion about the relationship between anger and heart disease? Follow the four-step process.
Short Answer
Yes, the data support the conclusion of anger and heart disease.

(a) Make an appropriate graphical display to compare the grade distributions for AP Calculus AB and AP Statistics.