Economists studied the relationship between students' attitudes toward graphs and their performance in an economics course. [Source: Cohn, E., et al. (2004). The Relation Between Student Attitudes Toward Graphs and Performance in Economics. American Economist, 48(2), 41-52.] The researcher's question concerns whether there is a between students who think that graphs contribute to learning and students who don't think graphs contribute to learning. Whether the researcher's question concerns a difference, or a relationship typically affects: Whether or not the study addresses the question

The type of statistical methods used

Variable

Categorical

Measurement

Test Average

GPA

Graphs

Age

Academic Major