Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 3

Table shows a trend in the 1990s among college smokers. What is the overall trend comparing 1993 to 1997? In which two groups did the rate of smoking increase the most? Compare the changes in smokers of the male and female populations. What is striking about these data? Summarize the 1997 results comparing (a) males to females, (b) percentage of smokers by race, and (c) percentage of smokers by college class.
Table Smoking Prevalence in College Students from 1993-1997* Change in Smoking Prevalence Among Subgroups of College Student Characteristics, 1993 vs. 1997