Plot the data points. Why do the data seem to follow a cubic pattern?
In 2000, the U.S. Bureau of the Census reported the percentage of the U.S. population that is foreign born.
Year | % Foreign born | Year | % Foreign born |
1900 | 13.6 | 1960 | 5.4 |
1910 | 14.7 | 1970 | 4.8 |
1920 | 13.2 | 1980 | 6.2 |
1930 | 11.6 | 1990 | 7.9 |
1940 | 8.8 | 1998 | 9.3 |
1950 | 6.9 | 2000 | 11.1 |
2005 | 12.1 |
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