Hopebridge Leveling Program Practice Exam

To determine the percent occurrence of a behavior during an observation period, you can use the formula:

\[ \text{Percent Occurrence} = \left( \frac{\text{Time Behavior was Displayed}}{\text{Total Observation Time}} \right) \times 100 \]

In this scenario, the behavior was displayed for 10 minutes out of a total observation time of 30 minutes. By substituting the values into the formula, you would calculate:

\[ \text{Percent Occurrence} = \left( \frac{10 \text{ minutes}}{30 \text{ minutes}} \right) \times 100 \]

This simplifies to:

\[ \text{Percent Occurrence} = \frac{1}{3} \times 100 = 33.33\% \]

When rounded to the nearest whole number, this represents a 33% occurrence of the behavior. Therefore, this is why the answer is identified as 33%.