8.3 The following data show estimates of the population of Liberia in selected years between 1960 and 2010: Year 1960 1970 1980 1990 2000 2010 Population (millions) 1.1 1.4 1.9 2.1 2.8 4 Calculate the rate of growth of the population in millions per year for 2010. (a) Use two-point backward difference formula. (b) Use three-point backward difference formula. (c) Using the slope in 2010 from part (b), apply the two-point central difference formula to extrapolate and predict the population in the year 2020.

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8.3 The following data show estimates of the population of Liberia in selected years between 1960 and
2010:
Year
1960
1970
1980
1990
2000
2010
Population (millions)
1.1
1.4
1.9
2.1
2.8
4
Calculate the rate of growth of the population in millions per year for 2010.
(a) Use two-point backward difference formula.
(b) Use three-point backward difference formula.
(c) Using the slope in 2010 from part (b), apply the two-point central difference formula to extrapolate and
predict the population in the year 2020.
Transcribed Image Text:8.3 The following data show estimates of the population of Liberia in selected years between 1960 and 2010: Year 1960 1970 1980 1990 2000 2010 Population (millions) 1.1 1.4 1.9 2.1 2.8 4 Calculate the rate of growth of the population in millions per year for 2010. (a) Use two-point backward difference formula. (b) Use three-point backward difference formula. (c) Using the slope in 2010 from part (b), apply the two-point central difference formula to extrapolate and predict the population in the year 2020.
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