Question

A research worker gave a scholastic aptitude test to a sample of eighth graders. Then he correlated the aptitude test scores with the chronological ages of the subjects. He found a correlation of - .42. How should this result be interpreted?

Answer 1

Answer: There is an moderate relationship between the aptitude test scores with the chronological ages of the subjects.

Explanation:

• The correlation coefficient tells about the strength and direction of the relation ship between any 2 variables.
• When the value of correlation coefficient lies between -0.5 to -0.3 or 0.3 to 0.5, then it indicates that there is moderate association between variables.

Here , variables → aptitude test scores and chronological ages of the subjects.

Since correlation coefficient (-0.42) lies between -0.5 and -0.3 .

[-0.5< -0.42< -0.3]

That means there is an moderate relationship between the aptitude test scores with the chronological ages of the subjects.