Free RBT Data Collection and Graphing Practice Test 2026 — BACB RBT Questions

This free RBT Data Collection and Graphing practice test covers continuous and discontinuous measurement, calculating rate/mean/percentage, and graphing and interpreting data trends for the BACB RBT exam. Each question includes a detailed explanation grounded in applied behavior analysis (ABA) — perfect for BACB RBT exam prep.

Key Topics in RBT Data Collection and Graphing

6 Free RBT Data Collection and Graphing Practice Questions with Answers

Sample Question 1 — Measurement

You are working with Maya, a 6-year-old with autism. The BCBA’s program says: “Record the number of times Maya hits the table during work time.” The session is 30 minutes long. During that time, Maya hits the table 3 times. What type of measurement are you using?

  1. A. Duration
  2. B. Frequency (Correct answer)
  3. C. Latency
  4. D. Interresponse time (IRT)

Correct answer: B

Explanation: You are counting how many times a behavior happens in a set period of time. This is frequency recording, which is on the RBT Task List under Measurement. - B (Frequency) is correct because you are tallying each instance of table hitting during the 30-minute session. - A (Duration) would be used if you were timing how long Maya hits the table, not how many times. - C (Latency) would be used if you were timing how long it takes for Maya to start hitting after a specific instruction or event. - D (IRT) would be used if you were timing the time between one hit and the next hit. Here, you are not timing between responses, just counting them.

Sample Question 2 — Measurement

Your BCBA asks you to measure how long it takes for Leo to start brushing his teeth after you give the instruction, “Go brush your teeth.” You start a timer as soon as you give the instruction and stop it when Leo begins brushing. What type of measurement are you collecting?

  1. A. Duration
  2. B. Frequency
  3. C. Latency (Correct answer)
  4. D. Whole-interval recording

Correct answer: C

Explanation: You are measuring the time from when you give an instruction to when Leo starts the behavior. This is latency, which is part of the Measurement section of the RBT Task List. - C (Latency) is correct because you are timing the delay between the instruction and the start of brushing. - A (Duration) would be used if you were timing how long Leo brushes his teeth from start to finish. - B (Frequency) would be used if you were counting how many times Leo brushes his teeth (for example, number of times per day), not the time to start. - D (Whole-interval recording) is a type of discontinuous measurement where you mark if a behavior happened for the entire interval. That is not what you are doing here.

Sample Question 3 — Measurement

The BCBA wants you to measure how long Tanika engages in hand-flapping during a 1-hour session. You start a timer each time she begins hand-flapping and stop it each time she stops. At the end of the session, you add up all the times and record the total. What type of measurement are you using?

  1. A. Duration (Correct answer)
  2. B. Latency
  3. C. Momentary time sampling
  4. D. Permanent product

Correct answer: A

Explanation: You are measuring how long the behavior lasts from start to finish and adding up the total time. This is duration recording, a core Measurement skill for RBTs. - A (Duration) is correct because you are timing the length of hand-flapping behavior. - B (Latency) would be the time from an instruction or event to the start of hand-flapping, which is not what you are doing. - C (Momentary time sampling) is a discontinuous measurement where you check at specific moments (e.g., at the end of each interval) to see if the behavior is happening, not timing it. - D (Permanent product) is when you measure the result of behavior (like number of worksheets completed), not the behavior as it happens.

Sample Question 4 — Measurement

Your BCBA sets up a program to measure off-task behavior using 10-second partial-interval recording during table work. Every 10 seconds, a timer beeps and you mark “+” if the client is off-task at any time during that 10-second interval, and “−” if they are not off-task at all during that interval. What type of measurement are you using?

  1. A. Whole-interval recording
  2. B. Partial-interval recording (Correct answer)
  3. C. Momentary time sampling
  4. D. Frequency recording

Correct answer: B

Explanation: You are using a discontinuous measurement system where you divide time into intervals and mark the behavior if it happens at any point during the interval. This is partial-interval recording, which is part of the Measurement tasks for RBTs. - B (Partial-interval recording) is correct because you record a “+” if the behavior occurs at any time during the interval. - A (Whole-interval recording) would require the behavior to occur for the entire interval to mark it as happening. - C (Momentary time sampling) would have you check only at the exact end of the interval to see if the behavior is happening at that moment. - D (Frequency recording) would involve counting each instance of off-task behavior, not using intervals with plus/minus marks.

Sample Question 5 — Measurement

You are working with Jonah on a worksheet completion program. The BCBA tells you: “At the end of the session, count how many math problems Jonah completed correctly on his worksheet and record that number.” You do not watch him the entire time; you just check the finished worksheet. What type of measurement are you using?

  1. A. Frequency recording
  2. B. Duration recording
  3. C. Permanent product recording (Correct answer)
  4. D. Whole-interval recording

Correct answer: C

Explanation: You are measuring the result of Jonah’s behavior (completed math problems) after the behavior has already happened. This is permanent product recording, which is included under Measurement for RBTs. - C (Permanent product recording) is correct because you are counting the completed work as evidence of behavior. - A (Frequency recording) is similar (counting), but is usually used when you directly observe and tally each response as it happens, not just the final product. - B (Duration recording) would involve timing how long Jonah works on the worksheet. - D (Whole-interval recording) is a discontinuous method where you mark if a behavior occurred for the entire interval; that is not what you are doing here.

Sample Question 6 — Measurement

A behavior plan says to record how many times Mateo hits the table during snack time. Snack time lasts 15 minutes. During one snack session, Mateo hits the table 3 times. What is the BEST way to record this data?

  1. A. Write that Mateo hit the table for 15 minutes
  2. B. Record a frequency count of 3 table hits for that snack session (Correct answer)
  3. C. Estimate that Mateo hit the table about 5 times and write that down
  4. D. Write a note that Mateo seemed more upset than usual without counting

Correct answer: B

Explanation: The plan asks for how many times the behavior happens, which is frequency. The correct response is to count each instance and record the total number (B). A describes duration (how long the behavior lasted), not how many times. C is incorrect because data must be accurate and based on actual observation, not guessing. D is incorrect because it is subjective and does not provide the requested measurement. The RBT Task List under Measurement includes recording frequency data accurately and objectively.

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