True Or False Chapter 10 - Cause And Effect: Correlation And Regression

11 Questions

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True Or False Chapter 10 - Cause And Effect: Correlation And Regression


Questions and Answers
  • 1. 
    A graphical picture of bivariate data is called a line diagram.
    • A. 

      True

    • B. 

      False

  • 2. 
    Correlation measures the strength of the association between two variables.
    • A. 

      True

    • B. 

      False

  • 3. 
    Regression defines the relationship between the two variables.
    • A. 

      True

    • B. 

      False

  • 4. 
    Correlation is measured on a scale from 0 to 1.
    • A. 

      True

    • B. 

      False

  • 5. 
    The least squares regression line maximises the sum of the squared errors.
    • A. 

      True

    • B. 

      False

  • 6. 
    A perfect linear relationship between two variables means that all the points lie on a straight line.
    • A. 

      True

    • B. 

      False

  • 7. 
    Spearman's rank correlation coefficient is used for nominal data.
    • A. 

      True

    • B. 

      False

  • 8. 
    A high correlation confirms a causal relationship.
    • A. 

      True

    • B. 

      False

  • 9. 
    A negative correlation coefficient means that there is no association between the two variables.
    • A. 

      True

    • B. 

      False

  • 10. 
    Pearson's product moment correlation coefficient can only be calculated for numerical data.
    • A. 

      True

    • B. 

      False

  • 11. 
    The coefficient b in the linear regression model represents the slope of the regression line.
    • A. 

      True

    • B. 

      False