Final answer:
Summative assessments are based on repeatable, measurable data.
Step-by-step explanation:
Based on the given information, the type of assessment that is based on repeatable, measurable data is summative assessments. Summative assessments are generally administered at the end of a unit or a course to evaluate students' learning and provide a final measure of achievement. These assessments rely on measurable data such as scores or grades to quantify students' performance.