If every point in a scattergram plotting variable X and variable Y falls on the line of best fit, we can conclude that
A) variable X predicts measured variable Y perfectly.
B) variable X explains none of the variance in variable Y.
C) the relationship between variables X and Y is positive.
D) Variable X causes variable Y , or vice versa.

Question

Quizplus · Accepted Answer

If every point in a scattergram falls on the line of best fit, it indicates a perfect predictive relationship between variable X and variable Y, meaning variable X predicts variable Y perfectly. This does not necessarily imply causation, directionality of the relationship, or the nature (positive/negative) of the relationship without further information.

If Every Point in a Scattergram Plotting Variable X and Variable