Identify the method for the forecast of population of a town, wherein the percentage increase in population from decade to decade, is assumed to remain constant

Identify the method for the forecast of population of a town, wherein the percentage increase in population from decade to decade, is assumed to remain constant Correct Answer Geometric increase method

Explanation:

Various methods for population forecasting as suitable for that city, considering the growth pattern, are as follows:

1. Arithmetical increase method:

• This method assumed that the population is increasing at a constant rate.
• The arithmetic increase method gives the lowest value of the population forecasted. Hence, this method is suitable for a large and old city with considerable development.

2. Geometrical increase method (or geometrical progression method):

• In this method, the percentage increase in population from decade to decade is assumed to remain constant. This method gives higher values and hence should be applied for a young and rapidly increasing city, but only for a few decades.

3. Incremental increase method:

• This method is a modification of the arithmetical increase method and it is suitable for an average size town under the normal condition where the growth rate is found to be in increasing order. 
•  Incremental increase method is better than the Geometric and Arithmetic increase method.

4. Logistic curve method:

• This method is used when the growth rate of the population due to births, deaths, and migrations takes place under normal situation and it is not subjected to any extraordinary changes like an epidemic, war, earthquake or any natural disaster, etc.