@article{MAKHILLJMMS20115228168, title = {Alternative Goodness-of-Fit Test in Logistic Regression Models}, journal = {Journal of Modern Mathematics and Statistics}, volume = {5}, number = {2}, pages = {43-46}, year = {2011}, issn = {1994-5388}, doi = {jmmstat.2011.43.46}, url = {https://makhillpublications.co/view-article.php?issn=1994-5388&doi=jmmstat.2011.43.46}, author = {C.A.,A.U.,E.I. and}, keywords = {predicted probabilities,observed proportions,standard error,Pearson chi-square,Deviance,p value,Nigeria}, abstract = {The Deviance and the Pearson chi-square are two traditional goodness-of-fit tests in generalized linear models for which the logistic model is a special case. The effort involved in the computation of either the Deviance or Pearson chi-square statistic is enormous and this provides a reason for prospecting an alternative goodness-of-fit test in logistic regression models with discrete predictor variables. The Deviance is based on the log likelihood function while the Pearson chi-square derives from the discrepancies between observed and predicted counts. Replacing observed and predicted counts with observed proportions and predicted probabilities, respectively in a cross-classification data arrangement, the standard error of estimate is proposed as an alternative goodness-of-fit test in logistic regression models. The illustrative example returns favourable comparisons with Deviance and the Pearson chi-square statistics.} }