Which of the Following is a True Statement About Experimentation

Question

Which of the following is a true statement about experimentation?
A) Variables in an experiment cannot be manipulated by the researcher.
B) Some hypotheses cannot be tested by experimentation.
C) Experimentation should test at least two or more hypotheses at the same time.
D) True randomization of subjects is impossible during experimentation.

Accepted Answer

Some hypotheses cannot be tested by experimentation because they may involve ethical or practical limitations that prevent manipulation of certain variables. However, this does not mean that alternative methods of testing these hypotheses cannot be used. Choices A, C, and D are all false statements. Variables in an experiment are deliberately manipulated by the researcher, experimentation can test one or more hypotheses at a time, and true randomization of subjects can be achieved through various methods such as computer-generated randomization or using a random number table.