We have three different types of data that can be collected: percentage, ratio, and text.

Percentage: This is the most commonly use data type.
Example: The student will answer wh- questions with 80% accuracy.

Ratio: The denominator is consistent. We see the changes based on the nominator increasing or decreasing.
Example: The student will use words to request in 4 out of 5 opportunities.

Text: This is for a goal that doesn't require a denominator to track goal progress.

Example: Student will produce 8-10 utterance during one session.