Fig. 10From: A comparison of residual diagnosis tools for diagnosing regression models for count dataScatter plots of the Pearson residual, deviance residual, MQR, and RQR versus fitted values under the Poisson, NB, ZIP, and ZINB models in the real data application modeling the number of ER visits. The rainbow colors correspond to the distinct values of the response variables ranging from red for the smallest value to blue for the largest valueBack to article page