The suitable method for forecasting population for a young and a rapidly developing city is
- AArithmetic Mean Method
- BGeometric Mean MethodCorrect
- CComparative Graphical Method
- DNone of the above
Solution
Concept
Population forecasting methods
Formula
Pn = P0 (1 + r/100)ⁿ
Step-by-step solution
1. Young, fast-growing cities grow in proportion to their present population. 2. The geometric increase method suits such growth.
Explanation
Arithmetic increase suits old, stable towns; geometric increase suits rapidly growing ones.
Why the other options are wrong
Arithmetic mean assumes a constant increase, which is too low for a young city.
Shortcut
Young city = geometric.
Common mistake
Choosing arithmetic increase.
Correct answer: B) Geometric Mean Method