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

تمرين 13

Let's look at the data in a different manner. Calculate the percent change of each age group relevant to 1982. For instance, the 35- to 44-year-old group increased by 2.9 percent from 1982 to 2002, which is a 29 percent increase over 1982 (2.9/10 × 100%). Interpret these calculations and draw conclusions.