2. Find the Percentages of Age Structure for Age Groups of 0-14, 15-64, And

SOC310

Assignment III

Name Point

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1. Suppose USA has population of 200 million in 1970. By 1980, the population reached 230 million. During the 10 years from 1970 to 1980, there were 50 million newly births and 30 million deaths. Use the balancing equation to estimate the number of migrants in the 10-year period. Provide equation and calculating steps. (10 points)

230,000,000 = 200,000,000 + 50,000,000 – 30,000,000 + Migrant (1970-1980)

Migrant (1970-1980) =

2. Find the percentages of age structure for age groups of 0-14, 15-64, and

65+ in the USA for the year 2000 (The total population of US is 281,421,906). (20 points) (http://www.census.gov/prod/2001pubs/c2kbr01-12.pdf

______

Age Group Size % of total

0-14 ______

15-64 ______

65+ ______

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3. A). Based on USA 2000 census data, Wisconsin State has 1,124,907 children under the age of 15 and 702,566 elderly aged 65 and above. The total population of the year of 2000 for the state is 5,363,701. Now calculate the dependency ratio for Wisconsin state and interpret the result. (10 points)

http://www.dhs.wisconsin.gov/population/00demog/wisconsin.htm

Dependency Ratio for WI = ------

Interpret:

B). Based on USA 2000 census data, the country has 60,253,375 children under the age of 15 and 34,991,753 elderly aged 65 and above. The total population of the year of 2000 for the country is 281,421,906. Now calculate the dependency ratio for the USA (10 points)

Dependency Ratio for USA = ------

Interpret:

4. In 2005, the USA has a population of 295,753,000. The crude birth rate is 14 per 1000 and crude death rate is 8 per 1000. The net migration rate is 3 per 1000. (30 points)

[Source: http://www.census.gov/ipc/www/idb/country.php]

Now by using the above information, assuming the same rate remains unchanged, calculate:

1) Number of births in 2005 =

2) Total number of births 2006-2010 =

3) Number of deaths in 2005 =

4) Total number of deaths 2006-2010 =

5) Number of net migrants 2005 =

6) Total number of migrants 2006-2010 =

5. Using the demographic balancing equation: P2010 = P2000 + (B – D) + (In-m – Out-m) and the findings in question #4, calculate and estimate USA population in 2010. Provide the formula and numbers in the equation. (20 points)

Population 2010 = P2000 + B - D + Im – Om

=