Simple graphical method for population growth
Graph of population growth
This method helps plotting graph between population value and year. The curve can be used to estimate the population growth of desired year. This method gives approximate results, as the extension of the curve is done by the intelligence of the designer. This method can't accommodate sudden change in population growth, like sudden imposing of immigration restrictions, or compulsory family planning for eligible couples, or may develop enhanced medical facilitates thereby reducing death rates. Due to such reasons, the results obtained from these methods may or may not be precise.
| Year | Population |
|---|---|
| 1941 | 858545 |
| 1951 | 1015672 |
| 1961 | 1201553 |
| 1971 | 1691538 |
| 1981 | 2077820 |
| 1991 | 2585862 |
| 2001 | 3717820 |
| 2011 | 4517815 |
| 2021 | 5687890 |
| 2031 | 6589236 |
This method is less time consuming and used by engineers for check on results obtained by other methods like arithmetic increase, geometric increase and incremental increase methods. The above table shows population growth versus year data. From the data graph will be plotted, consisting of X and Y axes. X axis has been chosen as population and Y axis has years. This graph exhibits change in of population growth as shown in below figure.
Fig.1. Graph between population and year.
Plotting graph of population growth
Edit the population growth data by clicking on any row value.
| Year | Population |
|---|---|
| 1941 | 858545 |
| 1951 | 1015672 |
| 1961 | 1201553 |
| 1971 | 1691538 |
| 1981 | 2077820 |
| 1991 | 2585862 |
| 2001 | 3717820 |
| 2011 | 4517815 |
| 2021 | 5687890 |
| 2031 | 6589236 |
Click on the plot to draw a population graph.
1. First video
2. Second video
Refrences
4. Practical Handbook on Water Supply Engineering (2011).Nabhi Publications.
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