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Questions and Answers
Which of the following best describes a correlation coefficient?
Which of the following best describes a correlation coefficient?
- A measure of the central tendency of a data set
- A measure of the variability within a data set
- A measure of the spread of a data set
- A numerical measure of the strength and direction of the linear relationship between two variables (correct)
What problem is associated with some types of correlation coefficients?
What problem is associated with some types of correlation coefficients?
- Underestimation of correlation
- Inability to handle large datasets
- Overestimation of correlation
- Distortion by outliers (correct)
What range of values can a correlation coefficient assume?
What range of values can a correlation coefficient assume?
- 0 to 1
- -1 to 1 (correct)
- -∞ to +∞
- -1 to 0
Which type of correlation coefficient is defined as the covariance of the variables divided by the product of their standard deviations?
Which type of correlation coefficient is defined as the covariance of the variables divided by the product of their standard deviations?
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What is the Pearson product-moment correlation coefficient also known as?
What is the Pearson product-moment correlation coefficient also known as?
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