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A researcher used stepwise regression to create regression models to predict Birthrate (births per 1000) using five predictors: LifeExp (life expectancy in years), InfMort (infant mortality rate), Density (population density per square kilometer), GDPCap (Gross Domestic Product per capita), and Literate (literacy percent). Interpret these results.
Regression Analysis-Stepwise Selection (best mode of each size)
153 observations
BirthRate is the dependent variable.
p - values for the coefficients
Never
LifeExp
InfMort
Density
GDPCap
Literate
s
Adj R2
R2
1
.0000
6.318
.722
.724
2
0.334
.802
.805
3
.0242
5.261
.807
.811
4
.5764
.0311
5.273
.806
.812
5
.5937
.6289
.0440
5.287
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