This question was previously asked in

SSC JE CE Previous Year Paper 2 (Held On: 27 Jan 2018 Morning)

Option 1 : Arithmetical increase method

ST 1: Structural Analysis

1581

20 Questions
60 Marks
25 Mins

**Explanation:**

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

1. Arithmetical increase method:

- In this method assumed that the population is
**increasing at a constant rate.** - 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 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.

4. Logistic curve method:

- This method is used when the g
**rowth 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.