In a line graph showing the results from a two-factor experiment, the levels of factor B are presented on the X-axis and separate lines are used to display the means for A1 and A2.If the points on the line for A1 are consistently 5 points higher than the corresponding point on the line for A2, what pattern of results is indicated?
A)no indication of an interaction
B)an indication of an overall A-effect
C)an indication of an A-effect but no indication of an interaction
D)an indication of an interaction but no indication of an A-effect

Question

Quizplus · Accepted Answer

An A-effect is indicated because the lines for A1 and A2 are parallel, indicating that the difference between A1 and A2 is the same at all levels of B. No interaction is indicated because the lines are parallel, indicating that the effect of A does not depend on the level of B.

In a Line Graph Showing the Results from a Two-Factor