Date of Award
2018
Document Type
Open Access Thesis
Department
Statistics
Sub-Department
College of Arts and Sciences
First Advisor
Brian Habing
Abstract
Goodness-of-fit criteria developed for the evaluation of item response functions have been examined by many scholars using different theories and criteria. A number of potential graphical analysis approaches, such as residual plots, have been described in literature, but have received little attention from researchers. While many tests of goodness-of-fit are available, those that incorporate the analysis of residuals may be most useful. The unmistakable presence of a pattern in the residual plot for the logistic model item response functions even when we know the model fits raises a red flag up and calls for greater analysis. This study explores different methods to improve residual plots for a 3-Parameter logistic model and determine if residual plots are truly useful in determining goodness of model-data fit
Rights
© 2018, Bryonna Bowen
Recommended Citation
Bowen, B.(2018). Goodness of Fit via Residual Plots in Item Response Theory. (Master's thesis). Retrieved from https://scholarcommons.sc.edu/etd/4713