The extent of _____ between two variables is indexed by a statistic known as the Pearson correlation coefficient.
A)linear approximation
B)nonlinear approximation
C)linear specification
D)nonlinear specification

Question

Quizplus · Accepted Answer

The Pearson correlation coefficient measures the linear relationship between two variables. It ranges from -1 (perfect negative correlation) to +1 (perfect positive correlation) with 0 indicating no linear correlation. Therefore, option A, linear approximation, is the correct choice. Option B, nonlinear approximation, is incorrect because the Pearson correlation coefficient measures only linear relationships and cannot capture nonlinear relationships. Options C and D, linear specification and nonlinear specification, are not appropriate terms in relation to correlation coefficient calculation.

The Extent of _____ Between Two Variables Is Indexed by a Statistic