I´d like to know how to get the parameter estimates for the latent trait (theta) using PROC IRT. The output automatically displays the models´ parameters, slope and difficulty/threshould, but doesn´t display the latent trait parameter, which is the most interest when setting one IRT model.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.