Results

Binomial Logistic Regression

Model Fit Measures
Overall Model Test
ModelDevianceAICMcFCSNχ²dfp
155.04667.0460.3300.3630.48727.06255.55e-5

 

Omnibus Likelihood Ratio Tests
Predictorχ²dfp
Crim Law 101 Grade4.15310.0416
Television Lawyer Model3.66710.0555
Parent Lawyers6.14130.1049
[3]

 

Model Coefficients - Verdict
95% Confidence Interval
PredictorEstimateSEZpOdds ratioLowerUpper
Intercept-5.5622.033-2.7360.006220.0040.0000.207
Crim Law 101 Grade0.7060.3591.9670.049232.0251.0024.093
Television Lawyer Model:       
Harvey Specter – Annalise Keating1.4840.8021.8500.064274.4110.91621.248
Parent Lawyers:       
Mother – Neither1.6120.8871.8180.069075.0140.88228.519
Father – Neither2.1781.3891.5680.116868.8270.580134.278
Both – Neither2.1910.9992.1940.028278.9401.26363.292
Note. Estimates represent the log odds of "Verdict = not guilty" vs. "Verdict = guilty"

 

Assumption Checks

Collinearity Statistics
 VIFTolerance
Crim Law 101 Grade1.1870.842
Television Lawyer Model1.1910.840
Parent Lawyers1.0400.961
[3]

 

Prediction

Classification Table – Verdict
Predicted
Observedguiltynot guilty% Correct
guilty19773.077
not guilty33191.176
Note. The cut-off value is set to 0.5

 

Predictive Measures
AccuracySpecificitySensitivity
0.8330.7310.912
Note. The cut-off value is set to 0.5

 

References

[1] The jamovi project (2021). jamovi. (Version 1.8) [Computer Software]. Retrieved from https://www.jamovi.org.

[2] R Core Team (2021). R: A Language and environment for statistical computing. (Version 4.0) [Computer software]. Retrieved from https://cran.r-project.org. (R packages retrieved from MRAN snapshot 2021-04-01).

[3] Fox, J., & Weisberg, S. (2020). car: Companion to Applied Regression. [R package]. Retrieved from https://cran.r-project.org/package=car.