Determine whether a linear model might fit the data.
Median Age. Data on the median age of the U.S. population in selected years are listed in the table below. Model the data with a linear function, estimate the median age in 1978, and predict the median age in 2020. Answers may vary depending on the data points used.
Year, x | Median Age, y |
1950, 0 | 30.2 |
1960, 10 | 29.5 |
1970, 20 | 28.0 |
1980, 30 | 30.0 |
1990, 40 | 32.8 |
2000, 50 | 35.3 |
2008, 58 | 36.8 |
Source: U.S. Census Bureau
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