Question

2.     To determine if using a study guide is an effective tool for improving students’ understanding of statistical concepts, students either received (based on random assignment) a study guide or no study guide and subsequently took a test examining their knowledge on various statistical concepts. In this study, the presence/absence of the study guide is:

a.     The independent variable

b.     The dependent variable

c.     The extraneous variable

d.     The random variable

3.     The above study (in question 2) can best be described as:

a.     An experiment

b.     A correlational study

c.     A survey

d.     One involving two variables that are manipulated.

4.    Explain the goal of experimental studies.

5.    Explain the key features of experimentation that

a.    enables it to accomplish that goal.

8.     What are the two reasons that limit the ability of correlational studies to provide information on causal relations between measured variables?

Answer 1