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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The correlation coefficient, r is used to determine
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y values given values of x.
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x values given values of y.
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the strength and direction of relationship between x and y.
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none of these.
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Explanation:
Detailed explanation-1: -The sign of the linear correlation coefficient indicates the direction of the linear relationship between x and y. When r (the correlation coefficient) is near 1 or −1, the linear relationship is strong; when it is near 0, the linear relationship is weak.
Detailed explanation-2: -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.
Detailed explanation-3: -Definition: The correlation coefficient (r ) is a numerical measure that measures the strength and direction of a linear relationship between two quantitative variables.
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