A correlation coefficient ranges from -1.0 to +1.0 and measures:
A) the magnitude and direction of an association between two variables.
B) how efficient the relationship is between two variables.
C) the range of scores between two variables.
D) the statistical significance of the different scores between two variables.

Question

Quizplus · Accepted Answer

Plotting scores on a chart with the dependent variable on one axis and the independent variable on the other allows us to examine how scores are related to one another through visual inspection and statistically. The scattergrams shown in Figure 2.9 illustrate this. Note that a definite trend can be observed in some scores while others show apparent randomness. A totally random distribution would have a correlation at or near zero.

A Correlation Coefficient Ranges from -1