BIOMEDICAL SCIENCES: Life Expectancy The following tables give the life expectancy for a newborn child born in the indicated year. (Exercise 71 is for males, Exercise 72 for females.)
Birth Year | 1960 | 1970 | 1980 | 1990 | 2000 |
Life Expectancy (female) | 73.1 | 74.7 | 77.5 | 78.8 | 79.6 |
a. Number the data columns with x-values 1–5 and use linear regression to fit a line to the data. State the regression formula. [Hint: See Example 8.]
b. Interpret the slope of the line. From your answer, what is the yearly change in life expectancy?
c. Use the regression line to predict life expectancy for a child born in 2025 (this might be your child or grandchild).
Source: U.S. Census Bureau
Example 8 LINEAR REGRESSION USNG A GRAPHING CALCULATOR
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