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Correlation Coefficient Basics
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Correlation Coefficient Basics

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Questions and Answers

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?

  • Underestimation of correlation
  • Inability to handle large datasets
  • Overestimation of correlation
  • Distortion by outliers (correct)

    • 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?

    <p>Pearson coefficient</p> Signup and view all the answers

    What is the Pearson product-moment correlation coefficient also known as?

    <p>Pearson's r</p> Signup and view all the answers

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