Question

3.) Psychologists concerned about self-injurious behaviors worry about the effects of maternal smoking on the incidence of low birth-weight babies, who are known to be at risk for developmental problems. The Centers for Disease Control and Prevention has published statistics relating maternal smoking to low birth-weight. The data follow in terms of percentage of birth-weights2,500 grams. (2 points total) (1 point each) 989 1990 1991 1992 1993 Smokers .36 11.25 11.41 1.49 11.84 Non-Smokers 6.02 6.14 6.36 6.35 6.56 a. Graph the data by hand (line or bar graph) b. Why did you choose to plot the data this way?

Answer 1