ERIC Number: ED367696
Record Type: Non-Journal
Publication Date: 1993-Dec
Reference Count: N/A
Multiple-Category Classification Using a Sequential Probability Ratio Test.
Spray, Judith A.
Sequential probability ratio testing (PRT), which usually is applied in situations requiring a decision between two simple hypotheses or a single decision point, is extended to include situations involving k decision points and [(k + 1)-choose-2] sets of simultaneous, simple hypotheses, where k>1. The multiple-decision point or multiple-category SPRT procedure can be used to classify examinees into k + 1 categories using computer adaptive methods. Computer simulations utilizing a 200-item pool of previously calibrated test items show that the multiple-category SPRT method controls misclassification error rates adequately, provided that the number of decision points is not too large. Twelve figures are included. (Contains 7 references.) (Author)
Descriptors: Classification, Computation, Computer Simulation, Decision Making, Hypothesis Testing, Statistical Analysis, Test Items, Validity
ACT Research Report Series, P.O. Box 168, Iowa City, IA 52243.
Publication Type: Reports - Evaluative
Education Level: N/A
Authoring Institution: American Coll. Testing Program, Iowa City, IA.