Analyze the regression below (n = 50 U.S. states) using the concepts you have le
ID: 3219464 • Letter: A
Question
Analyze the regression below (n = 50 U.S. states) using the concepts you have learned about multiple regression. Make sure to include the regression equation, interpretations of each coefficient (along with a discussion of whether it makes sense), a discussion about goodness of fit, and a residual analysis. Make a prediction for Poverty for a state with Dropout = 15, TeenMom = 12, Unem = 4, and Age65% = 12 (show your work). The variables are Poverty = percentage below the poverty level; Dropout = percentage of adult population that did not finish high school; TeenMom = percentage of total births by teenage mothers; Unem = unemployment rate, civilian labor force; and Age65% = percentage of population aged 65 and over.
Explanation / Answer
Answer:
a discussion about goodness of fit, and a residual analysis. Make a prediction for Poverty for a state with Dropout = 15, TeenMom = 12, Unem = 4, and Age65% = 12 (show your work). The variables are Poverty = percentage below the poverty level; Dropout = percentage of adult population that did not finish high school; TeenMom = percentage of total births by teenage mothers; Unem = unemployment rate, civilian labor force; and Age65% = percentage of population aged 65 and over.
The estimated regression line is
Poverty = -5.3546+0.2065* Dropout+0.4238* TeenMom+1.1081* Unem+0.3469* Age65%
When
prediction for Poverty for a state with Dropout = 15, TeenMom = 12, Unem = 4, and Age65% = 12,
predicted Poverty = -5.3546+0.2065* 15+0.4238* 12+1.1081* 4+0.3469* 12
=11.4237
Calculated R square =0.625
62.5% of variation in Poverty is explained by the mode.
The calculated F=18.74, P=0.000 which is less than 0.05 level.
The model is significant and useful.
The residual analysis shows that there is no violation of assumption of normality, equality of variance.