A perfect straight line sloping upward would produce a correlation coefficient equal to:
A) +1.
B) -1.
C) +2.
D) -2.

Question

Quizplus · Accepted Answer

A perfect straight line sloping upward indicates a perfect positive relationship between two variables. The correlation coefficient, which measures the strength and direction of a linear relationship, ranges from -1 to +1. A positive correlation coefficient of +1 indicates a perfect positive relationship, while a negative correlation coefficient of -1 indicates a perfect negative relationship. A perfect straight line sloping upwards would therefore produce a correlation coefficient of +1.

A Perfect Straight Line Sloping Upward Would Produce a Correlation