STATISTICAL TECHNIQUES AND TOOLS
CORRELATION COEFFICIENT COEFFICIENT OF DETERMINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Strong positive
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Weak positive
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Strong negative
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Weak negative
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Detailed explanation-1: -The correlation coefficient is a statistical measure of the strength of a linear relationship between two variables. Its values can range from-1 to 1. A correlation coefficient of-1 describes a perfect negative, or inverse, correlation, with values in one series rising as those in the other decline, and vice versa.
Detailed explanation-2: -The correlation coefficient r is a unit-free value between-1 and 1. Statistical significance is indicated with a p-value. Therefore, correlations are typically written with two key numbers: r = and p = . The closer r is to zero, the weaker the linear relationship.
Detailed explanation-3: -The correlation coefficient (expressed as r ) shows the direction and strength of a relationship between two variables. The closer the r value is to +1 or-1, the stronger the linear relationship between the two variables is.