Question: To help assess student learning in her music theory courses, a music professor at a community college implemented pre- and post-tests for her music theory

To help assess student learning in her music theory courses, a music professor at a community college implemented pre- and post-tests for her music theory students.
A knowledge-gained score was obtained by taking the difference of the two test scores.

(a) What type of experimental design is this?

(b) What is the response variable in this experiment?

(c) What is the treatment?

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