A researcher wants to test the effectiveness of two
different computer-based instructional methods on teaching a unit on weather in
seventh-grade science. The researcher fi nds a teacher who will permit three of
his classes to participate: Two classes use the computer-based instruction, and
the third receives conventional classroom instruction. The researcher
administers a pretest to all students, each class has a different method of
instruction, and then a posttest is administered.
a. Specify the design of this study and represent it using
the notation system used in this chapter.
b. What statistics would you choose to analyze the data?
Leave a Reply