Question

World Population Growth Rate				World Fertility Rate Children per Woman
	1995	1.55			4.9	1965
	2005	1.25			4.8	1970
	2015	1.18			4.3	1975
	2017	1.1			3.8	1980
					3.6	1985
					3.4	1990
					3.1	1995
					2.8	2000
					2.7	2005
					2.6	2010

When will the world reach the 2.2 children per woman zero population growth rate?

Answer 1

Regression

Regression Model

Year = 2070.952 – 49.568*Growth Rate

When X = 0

Year = 2070.952 – 49.568*0 = 2070.9 ~ 2071

Regression Model 2

Regression Model

Year = 2051.06 – 17.66* Fertility Rate Children per Woman

So, When Fertility Rate Children per Woman = 2.2

Year = 2051.06 – 17.66*2.2 = 2012.22

So, in Year 2012.22, Womens Fertility rate is expected to be 2.2 and

By 2071, World’s Population Growth would be 0.