Discuss how to determine the direction and strength of correlation coefficients.
What will be an ideal response?
Ans: Answer would ideally include: Most correlation coefficients range in value from –1.00 to +1.00 (although some can range from .00 to +1.00). The direction is indicated as either a positive or negative value on the scale. In a positive relationship, high scores on one variable tend to be associated with high scores on the second variable, while low scores are associated with low scores. In a negative relationship, high scores on one variable tend to be associated with low scores on the other variable. The strength of the relationship is indicated by the magnitude of the numerical value of the coefficient, where strong correlations are typically considered as those whose values exceed ?±.70, and weak correlations are those whose values tend to fall between –.30 and .00 and between +.30 and .00.
–1.00 to –.70 = Strong, negative relationship
–.70 to –.30 = Moderate, negative relationship
–.30 to .00 = Weak, negative relationship
.00 to +.30 = Weak, positive relationship
+.30 to +.70 = Moderate, positive relationship
+.70 to +1.00 = Strong, positive relationship
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