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.
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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.