The value of Pearson's correlation coefficient must lie between:
Correct answer: B. -1 and 1
- A. 0 and 1
- B. -1 and 1
- C. - infinity and infinity
- D. -100 and 100
Explanation
Pearson's correlation coefficient ranges from -1 to +1. A value of +1 or -1 indicates perfect linear association, while 0 indicates no linear association.
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About Correlation and Regression
Correlation describes the direction and strength of association between two variables using scatter diagrams and correlation coefficients. Regression covers fitted lines, regression equations, prediction and least squares, with a clear distinction between association and causation and between estimating a response value and reversing the roles of the variables.
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