Question

What is the expression used for population forecasting by the incremental increase method?

(a) PO (1 + R/100)^n

(b) PO + n*x

(c) PO + n*x + (n (n+1) /2) *y

(d) PO – n*x

The question was asked in homework.

My question is taken from Population Forecasting in division Water Demand and Quantity of Environmental Engineering

Answer 1

The correct option is (c) PO + n*x + (n (n+1) /2) *y

Easy explanation: The expression of the incremental increase method is given by PO + n*x + (n (n+1) /2) *y where PO is the present population, x is the average of the population increase in known decade, y is the average of incremental increase and n is the number of decades.