Measures of Mortality and Migration
Death rate refers to the decrease in the size of population. Migration is another process of demography and deals with the change in the size and composition of the population by migrating from one place to another. This note provides an information about the measures of mortality and migration.
Summary
Death rate refers to the decrease in the size of population. Migration is another process of demography and deals with the change in the size and composition of the population by migrating from one place to another. This note provides an information about the measures of mortality and migration.
Things to Remember
- Death rate refers to the decrease in the size of population.
- Crude Death Rate is a simple measure of mortality.
- Infants are considered as the age group of 0-1 year old. IMR measures the mortality rate prior to the age below one.
- Migration is another process of demography and deals with the change in the size and composition of the population by migrating from one place to another.
- Out-Migration rate deals with the people leaving the place of origin within or outside the country.
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Measures of Mortality and Migration
Measures of Mortality
Death rate refers to the decrease in the size of the population. A declining death rate due to the modern scientific heath services and a constant birth rate have been the major causes of rapid population growth in Nepal.
The measures that are commonly used to estimate mortality rates are as follows: -
- Crude Death Rate (CDR)
- Infant Mortality Rate (IMR)
1.Crude Death Rate(CDR)
Crude Death Rate is a simple measure of mortality. It gives the number of deaths occurring in a given population during a specified year per 1000 of the population at mid-year.
2.Infant Mortality Rate(IMR)
Infants are considered as the age group of 0-1-year-old. IMR measures the mortality rate prior to the age below one. The infant mortality rate is calculated as follows: -
Measures of Migration
Migration is another process of demography and deals with the change in the size and composition of the population by migrating from one place to another. There are two types of migration. They are national and international migration. In both of these migrations, there are two ways of the flow of population inflow and outflow. People who flow-in from another place or country are called immigrants and those who flow out from their native place or country are emigrants.
Various measures of migration are as follows: -
- In-Migration Rate
- Out-Migration Rate
1.In-Migration Rate
In-Migration rate deals with the people coming into a place or a country.
2.Out-Migration Rate
Out-Migration rate deals with the people leaving the place of origin within or outside the country.
Lesson
Introduction to Population and Its State
Subject
Social Studies and Population Education
Grade
Grade 8
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