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The bank of circumstances fulfilled the brand new model presumptions and you may suitable the fresh new data relatively really
step three.step 1. Product Choices
According to Samejima’s rated effect IRT design [twenty two,25], utilizing the limited maximum likelihood estimator (MMLE), we could receive one to slope and four endurance (location) variables each items. No item is neglected because of the estimation procedure. The brand new hill parameter is actually a measure of this new discerning fuel off a product, as well as the location factor measures the newest regularity away from a behavior otherwise an attitude. The brand new mountains and you will thresholds of the many points was projected and you may published to figshare getting customers to check (look for, doi: /m9.figshare.20024240. reached to your ). I got a mountain larger than step 1 and you may thresholds within this [?cuatro, 4] because the item options conditions [17,26]. (więcej…)