About Population Change Formula
A shift in the number of individuals through time is referred to as population change. The global population has been fluctuating. It has grown significantly. The population fluctuates due to birth and death rates, as well as people moving in quest of better-paying jobs. Global population change is an ongoing phenomenon. The Population Change Formula aids in the analysis of population change. In 30 years, the global population is predicted to increase by 2 billion, from 7.7 billion to 9.7 billion people. According to a recent UN report, India is anticipated to grow by 273 million people by 2050. Get the List of all Maths formulas in one place.
What is Population Change Formula?
There are 4 major factors affecting Population change.
- Birth rate
- Death Rate
- Immigration
- Emigration
The formula for calculating population change is as follows:
Population change = (Births + Immigration) - (Deaths + Emigration)
Example: A European country gathered annual data as shown below. Can you compute the country's 'population change'?
- Births - 20,000
- Immigration - 5,000
- Emigration - 7,000
- Deaths - 21,000
- Sol: We know, that the formula for the population change is:
- Population change = (Births + Immigration) - (Deaths + Emigration)
- = (20,000 + 5,000) - (21,000 + 7,000)
- = 25,000 - 28000
- = -3,000
- There is negative growth in the population.
- Answer: The population decreased by 3000 individuals.
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