The Pearson correlation coefficient (r) assumes the relationship between two variables ______.

A) is one-tailed (directional)
B) is statistically significant
C) goes on to infinity in both directions
D) may be represented by a straight line

One-Tailed

One-tailed tests in statistics specify a direction of the hypothesis, predicting either a positive or negative change but not both.

Statistically Significant

Indicating that a result from data analysis is not likely to occur by chance alone, according to a pre-determined significance level, and suggests true effects or differences.

Infinity

A concept in mathematics denoting something without any limit, often represented by the symbol ∞.