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Calculating Birth and Death Rate

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Miss Palumbo

on 23 January 2014

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Transcript of Calculating Birth and Death Rate

Calculating Birth/ Death/ and Natural Increase Rate
Population increases for two reasons:
1.
Natural increase
(more births than deaths)
2.
Net Migration
(more people move to Canada than leave Canada)

Today's lesson will focus on birth rates, death rates, and natural increase of population

Birth Rate
(or Crude Birth Rate)
represents the number of births per year for every 1000 people
Calculating Birth Rate
Birth rate requires a simple calculation:

Step 1: dividing the number of births in one year by the total population
Step 2: then multiplying the result by 1000
Birth rate= births/population X 1000

But how do we determine the difference between the two?
We can combine the birth rate and death rate to determine a measurement called the
natural increase rate
Without looking at your textbook...
How would you define birth rate?
How do you think it affects Canada's population?

How would you define death rate?
How do you think it affects Canada's population?
Death Rate
(Crude Death Rate)
represents the number of deaths
per year for every 1000 people
To better understand how population increases or decreases, we must calculate birth rate and death rate;

This makes it easier to compare population statistics with other countries and across different points in time

Calculating Death Rate
A similar formula is applied for calculating death rate:

Step 1: dividing the number of deaths in one year by the total population
Step 2: then multiplying the result by 1000


Death rate= deaths/population X 1000
Natural increase/decrease rate= (birth rate - death rate) X 100
Natural increase rates are calculated as a percentage and follows three simple steps:

Step 1: taking the birth rate and subtracting it from the death rate
Step 2: dividing the result by 1000
Step 3: multiplying the result by 100

Now let's think
What might a high birth rate tell us about a country's population? It's conditions?

What about a low birth rate?
What about a high death rate?
What about a low death rate?
Demographic Transition Model
results in stable population
improvements in healthcare and nutrition means people live longer, especially infants
parents limit the size of families because more of their children will live into adulthood, no longer need many children to work on farms because most of the population live in cities, women are more educated, more women work outside the home
results in stable population once again
Full transcript