The experimental design is divided into seven parts,which are the following: treatment variable,_____,pretest,post-test,experimental group,control group,and _____.
A)research question;random assignment
B)dependent variable;random assignment
C)random assignment;sample
D)independent variable;random selection
E)hypothesis;random treatment

Question

Quizplus · Accepted Answer

The treatment variable and post-test are already mentioned in the question stem. The pretest is used to measure the initial state of each group, the experimental group receives the treatment while the control group does not, and random assignment ensures that participants are randomly placed in either group. Therefore, the missing parts in the design are the dependent variable (which is measured in both the pretest and post-test) and the use of random assignment to ensure that participants are placed into groups by chance, not by any systematic factors. This makes option B the best choice.

The Experimental Design Is Divided into Seven Parts,which Are the Following