If the results of a two-factor experiment are presented in a line graph,then what pattern appears in the graph if there is an interaction?
A)The lines in the graph are not straight (bent).
B)The lines are separated by a space.
C)The lines are parallel.
D)The lines move toward each other or cross.

Question

If the results of a two-factor experiment are presented in a line graph,then what pattern appears in the graph if there is an interaction?​
A)​The lines in the graph are not straight (bent).
B)​The lines are separated by a space.
C)​The lines are parallel.
D)​The lines move toward each other or cross.

Quizplus · Accepted Answer

When there is an interaction, the lines representing the two factors will move toward each other or cross. This indicates that the effect of one factor depends on the level of the other factor. If the lines are parallel, it suggests that there is no interaction and the effects of the two factors are independent of each other. Bent lines or spaces between lines do not necessarily indicate an interaction.

If the Results of a Two-Factor Experiment Are Presented in a Line