Population in U.S.
Assuming exponential growth, calculate the rate of increase for the human population in the United States from 1900 to 1910 using the data below. Use this rate to estimate the population size of the United States in 1990. Using this rate, find in what year the population was 100 million.
Repeat this exercise using the rate of increase from 1960 to 1970 to estimate population size in 1990 for the United States and to find in what year the population was 100 million.
Which rate provided the best estimate of population size in 1990? Which rate provided the best estimate of the year when the population was 100 million? Provide reasons that might account for differences in these calculations.
| Year | United States Population |
|
1790 |
3,900,000 |
|
1800 |
5,300,000 |
|
1810 |
7,200,000 |
|
1820 |
9,600,000 |
|
1830 |
12,800,000 |
|
1840 |
17,000,000 |
|
1850 |
23,200,000 |
|
1860 |
31,400,000 |
|
1870 |
38,600,000 |
|
1900 |
76,094,000 |
|
1910 |
92,407,000 |
|
1920 |
106,466,000 |
|
1930 |
123,077,000 |
|
1940 |
131,954,000 |
|
1950 |
151,868,000 |
|
1960 |
179,975,000 |
|
1970 |
206,827,000 |
|
1980 |
229,466,000 |