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[answered] Model Summary Step -2 Log likelihood Cox & Snel


The 2010 version of the General Social Survey asks the question: ?Do you favor or oppose the death penalty for persons convicted of murder??? We want to know what explains why people oppose the death penalty.? The response ?favor? is coded as a 1, and the response ?oppose? is coded as a 2.

A logistic regression model was estimated.? The SPSS output is attached.

Answer the following:?

The -2 log likelihood value is statistically significant.? What does this value tell us?? (3 points)

The Nagelkerke R2 value is 0.040.? Interpret the value.? (3 points)

  • Which variables are statistically significant at the 95% confidence level? (3 points)
  • The variable ?degree? is an ordinal variable measured in terms of increasing levels of education (less than high school, high school, junior college, bachelor, graduate).? Interpret the regression coefficient for the variable ?degree? by computing the odds ratio. (3 points)
  • The variable ?sex? is a dichotomous variable with males coded as a ?1? and females coded as a ?2.?.? Interpret the regression coefficient for the variable ?sex? by computing the odds ratio. (3 points)?


Model Summary

 

Step -2 Log likelihood Cox & Snell R Square 1 1362.658a .040 .028 Nagelkerke R Square a. Estimation terminated at iteration number 4 because parameter estimates changed by less than .001. Variables in the Equation

 

B S.E. Wald df -.007 .005 2.485 1 .115 .993 degree .233 .055 18.243 1 .000 1.263 sex .134 5.261 1 .022 1.359 Step 1a age .307 Sig. Exp(B)

 

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