Question

which of the following correlation coefficients indicates the strongest relationship between two variables? o a. -.90 o b. -.50 o c. +.80 o d. +.25

Explanation:

Step1: Recall correlation coefficient strength

The strength of a correlation is determined by the absolute value of the correlation coefficient. The closer the absolute value is to 1, the stronger the relationship.

Step2: Calculate absolute values

• For option A: $|-0.90| = 0.90$
• For option B: $|-0.50| = 0.50$
• For option C: $|+0.80| = 0.80$
• For option D: $|+0.25| = 0.25$

Step3: Compare absolute values

Compare 0.90, 0.50, 0.80, and 0.25. 0.90 is the largest.

Answer:

A. -0.90