Migration from a set of rates (cont.)
Does the use of the 'remainder' regions make sense?
It is very difficult to choose a population base for comparing the rates of in- and out-migration together, since the population at risk of migrating can be very different in size.
Exercise
In 2000, the population of Brazil and São Paulo was 169.590.693. São Paulo State (SP) comprissed 36.969.476 people and the reminder of Brazil was 132,621,217 people. During the period 1995-2000 São Paulo sent 735,517 out-migrants to the Remainder of the Country (RC). On the other hand, São Paulo received 991,313 in-migrants from the RC.
| Out-migrants From | In-migrants to | Population at Risk in 1995 | |
|---|---|---|---|
| SP | RC | ||
| SP | A | 735,517 | C |
| RC | 991,313 | B | D |
| Population 2000 | 36,969,476 | 132,621,217 | E |
Calculate each of the items below (A, B, C, D and E) based on the table above, then drag the figures on the left column into the appropriate cells.
Reveal answer and correct calculus
| Out-migrants From | In-migrants to | Population at Risk (in 1995) |
|
|---|---|---|---|
| SP | RC | ||
| SP | 35,978,163 | 735,517 | 36,713,680 |
| RC | 991,313 | 131,885,700 | 132,877,013 |
| Population 2000 | 36,969,476 | 132,621,217 | 169,590,693 |
A) Population of SP in 2000 minus the in-migrants from the RC
Correct calculus: 36,969,476 - 991,313 = 35,978,163
B) Population of the RC in 2000 minus the in-migrants from SP
Correct calculus: 132,621,217 - 735,517 = 131,885,700
C) Population at risk of migrating from SP to RC
Correct calculus: 35,978,163 + 735,517 = 36,713,680
D) Population at risk of migrating from RC to SP
Correct calculus: 131,885,700 + 991,313 = 132,877,013
E) The population at risk of migrating in Brazil, who survived at the end of the period
Correct calculus: 36,713,680 + 132,877,013 = 169,590,693, or 36,969,476 + 132,621,217