When two variables are at the ratio level of measurement, which of the following statements is true about calculating Pearson's r?
A)We can disregard whether the degrees of variance in the two variables are similar.
B)The degree of linearity in the scatterplot won't matter.
C)The presence of outliers can influence the calculation and interpretation of the correlation coefficient.
D)All of these.

Question

Quizplus · Accepted Answer

Pearson's r is sensitive to outliers, meaning that the presence of outliers can significantly influence the calculation and interpretation of the correlation coefficient. This is because Pearson's r assesses the linear relationship between two variables, and outliers can distort the perception of that relationship.

When Two Variables Are at the Ratio Level of Measurement