One assumption for using hypothesis testing for Pearson correlation is that one variable should vary equally at each level of the other variable.What is the easiest way to determine whether this assumption has been met?
A) Review the value of r; if it is high, then the assumption has been met.
B) Conduct a post hoc test following the calculation of r.
C) Draw a scatterplot to see whether the range of values is equal across all values of the other variable.
D) Calculate the cross-products of the deviation scores.If the result is positive, then the assumption has been met.

Question

Quizplus · Accepted Answer

Drawing a scatterplot is the easiest way to visually inspect whether the assumption of equal variation across levels of the other variable has been met. This can be done by examining whether the range of values is equal across all values of the other variable. Reviewing the value of r alone is not enough to determine whether the assumption has been met, and post hoc tests and calculating cross-products of deviation scores are not necessary or relevant for checking this assumption.

One Assumption for Using Hypothesis Testing for Pearson Correlation Is