A researcher observes a correlation of values from 2 to 10 points and draws conclusions about the full range of values in the population from 0 to 21 points.Which limitation for correctly interpreting a correlation coefficient did the researcher violate?
A) reverse causality
B) restriction of range
C) a confound variable
D) homoscedasticity

Question

Quizplus · Accepted Answer

The researcher violated the limitation of restriction of range by observing a correlation of only 2 to 10 points and drawing conclusions about the full range of values in the population from 0 to 21 points. This limitation occurs when the range of scores is limited in either the independent or dependent variable, which can lead to an underestimation of the true correlation coefficient.

A Researcher Observes a Correlation of Values from 2 to 10