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Which method of population forecast is suitable when extension is required for small duration and past record is available for long duration?

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+1 vote
in Environmental Engineering by (81.4k points)
Which method of population forecast is suitable when extension is required for small duration and past record is available for long duration?

(a) Graphical comparison method

(b) Graphical extension method

(c) Logistic curve method

(d) Zoning method

I got this question during an internship interview.

My doubt is from Population Forecasting in chapter Water Demand and Quantity of Environmental Engineering

1 Answer

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Best answer
The correct choice is (b) Graphical extension method

To explain: In the graphical extension method, a curve is drawn between population and time up to the present period, then the curve is extended from present to the future decade and the population is approximately determined from the extended part of the curve.

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