If a line is drawn through the conditional means of Y, the line will________.
A) always be perfectly linear.
B) rarely be a perfectly straight line.
C) always be parallel to the horizontal axis.
D) always be parallel to the vertical axis.

Question

Quizplus · Accepted Answer

The line drawn through the conditional means of Y will rarely be a perfectly straight line because there may be variability in the relationship between X and Y within each group or level of the conditional variable. This can result in a non-linear relationship between X and Y within each group, which can translate to a non-linear overall relationship when the conditional means are connected.

If a Line Is Drawn Through the Conditional Means of Y