A Brief True-False Quiz on Chapter 2
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1Research problem questions should be stated broadly so that they are not trivial.

2A variable is a symbol to which a number may be assigned.

3Research problem statements make judgments about the value of some variables over others.

4Assuming that it is not used in a simple descriptive study, the following research problem question is acceptable: How many children watch television for more than twenty hours a week?

5A hypothesis is an educated guess.

6Hypotheses may come from any source and may take any direction.

7Directional material hypotheses state that there will be some kinds of relationships between variables, but not the contours of the relationships.

8Researchers sometimes support null hypotheses.

9Independent variables are those used to predict outcomes (dependent variables) posited in hypotheses.

10Moderator variables are the ones that mediate the independent variable's prediction of the dependent variable.

11Dependent variables are those whose values or activities are presumed to be conditioned on the independent variable in the hypothesis.

12Hypotheses should be consistent with what is known in the literature.