When figuring a correlation coefficient,an outlier
A)usually has only a small effect on the computed correlation.
B)can have an strong effect on the computed correlation.
C)generally increases the statistical power of the study.
D)can be balanced by the effects of attenuation.

Question

Quizplus · Accepted Answer

An outlier can have a strong effect on the computed correlation. This is because the correlation coefficient measures the degree to which two variables are related to each other, and an outlier can skew the relationship between the two variables. A single outlier can create a large difference in the correlation coefficient, making it appear stronger or weaker than it actually is.

When Figuring a Correlation Coefficient,an Outlier