Focus your BCBA study efforts on section C of the exam: Measurement. 
 
Assess your knowledge in the following areas, per the BCBA Task List, 5th ed.
C-1  Establish operational definitions of behavior.
C-2  Distinguish among direct, indirect, and product measures of behavior.
C-3  Measure occurrence (e.g., count, frequency, rate, percentage).
C-4  Measure temporal dimensions of behavior (e.g., duration, latency, interresponse time).
C-5  Measure form and strength of behavior (e.g., topography, magnitude).
C-6  Measure trials to criterion.
C-7  Design and implement sampling procedures (i.e., interval recording, time sampling).
C-8  Evaluate the validity and reliability of measurement procedures.
C-9  Select a measurement system to obtain representative data given the dimensions of behavior and the logistics of observing and recording.
C-10 Graph data to communicate relevant quantitative relations (e.g., equal-interval graphs, bar graphs, cumulative records).
C-11 Interpret graphed data.
 
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