BCBA Exam Formulas Answered 100% Correct

Total Count IOA - ANSWER-Smaller #/Larger # x 100% Mean Count-Per-Interval IOA - ANSWER-Int 1 IOA + Int 2 IOA + Int N IOA/Total # of Intervals x 100% Exact Count-Per-Interval IOA - ANSWER-# of Intervals of 100% agreement/total # of Intervals x 100% Trial-by-Trail IOA - ANSWER-# of Trials of Agreement/Total # of Trials x 100% Total Duration IOA - ANSWER-Shorter Duration/Longer Duration x 100% Mean Duration (or IRT)-Per-Occurrence IOA - ANSWER-Duration IOA B1 + Duration IOA B2 + Duration IOA Bn/n Behaviors with Duration IOA Interval-By-Interval IOA - ANSWER-# of Intervals Both Recorders Agree/Total # of Intervals x 100% Scored Interval IOA - ANSWER-# of Intervals Both Recorders Recorded Occurrence/# of Intervals AT LEAST ONE Recorder Recorded Occurrence x 100% Unscored Interval IOA - ANSWER-# of Intervals Both Recorders Recorded Non-Occurrence/# of Intervals AT LEAST ONE Recorder Recorded Non-Occurrence x 100% For Increasing Behaviors - ANSWER-Baseline Average < Initial Criterion </= Highest Performance in Baseline For Decreasing Behaviors - ANSWER-Baseline Average > Initial Criterion >/= Lowest Performance in Baseline Setting Initial NCR Schedule - ANSWER-Total Duration of All Baseline Sessions/Total # of Behaviors Recorded During Baseline Sessions Setting Initial DRO Interval - ANSWER-Total Duration of All Baseline Sessions/Total # of Behaviors Recorded During Baseline Sessions Full Session DRL - ANSWER-Total # of Behaviors Recorded During Baseline Sessions/Total # of Each Baseline Session