Two teachers who are friends teach math at different high schools. At a conference, they learn about a new program for teaching trigonometry. They decide to test it by having one teacher use it in her class and the other use the traditional program, then compare their students' scores on the AP trigonometry test. This is an example of which experimental design?
A) one-group posttest-only design
B) one-group pretest-posttest design
C) non-equivalent posttest-only design
D) non-equivalent before-after pretest-posttest) design

Question

Quizplus · Accepted Answer

This scenario is an example of a non-equivalent posttest-only design because it involves comparing the outcomes (AP trigonometry test scores) of two different groups (students taught with the new program and those taught with the traditional program) without ensuring the groups are equivalent at the start. There's no mention of measuring the students' knowledge before the intervention, which rules out pretest-posttest designs.

Two Teachers Who Are Friends Teach Math at Different High