If a line graph has been used to portray the results of a single-factor study, you can be sure that
A) the dependent variable is a discrete variable
B) it is a multilevel design, not a two-level design
C) there is a continuous variable on the X-axis
D) a nonlinear effect will occur

Question

Quizplus · Accepted Answer

A line graph is typically used to display changes in a continuous variable over time or across levels of a factor. Therefore, the X-axis would have a continuous variable, and the dependent variable may also be continuous (rather than discrete). The use of a line graph does not necessarily indicate whether the design is multilevel or two-level, nor does it suggest whether a nonlinear effect will occur.

If a Line Graph Has Been Used to Portray the Results