Problems 23–34 are intended as calculator or computer problems and are based on the U.S. census data in the table of Fig. 3.7.13, listed by national region in millions for the census years 1950–1990. See www.census.gov/population/  censusdata/table-16.pdf for further details.

31–34. The same as Problems 23–26, except fit a quartic polynomial to the 1950, 1960, 1970, 1980, and 1990 population data for the indicated region.

The Northeast

The Midwest

The South

The West

Transcribed Image Text:

Northeast Midwest South West U.S. 1950 39.478 44.461 47.197 20.190 151.326 1960 44.678 51.619 54.973 28.053 179.323 1970 49.061 56.590 62.813 34.838 203.302 1980 49.137 58.867 75.367 43.171 226.542 1990 50.809 59.669 85.446 52.786 248.710