Author Question: Refer to Exhibit 10-10. A teacher researcher randomly assigned students within a classroom to two ... (Read 37 times)

nmorano1 · **on:** Jun 20, 2018

Refer to Exhibit 10-10. A teacher researcher randomly assigned students within a classroom to two groups, one of which received some special instructional materials to take home with them to study and to use with homework assignments. The C group did not get the special materials. The researcher was surprised to find that there weren't significant differences between the two groups on achievement tests and other selected measures.

a. Regression
b. Diffusion
c. Mortality
d. Selection
e. History

Question 2

Refer to Exhibit 10-10. A researcher used two classrooms in an experimental study. It was found that the E group had more high ability students than the C group before the study began.

a. Regression
b. Diffusion
c. Mortality
d. Selection bias
e. History