Psychological Research Methods II

15 Questions | Total Attempts: 55

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Research Method Quizzes & Trivia

Know correlation. Know simple regression. Know multiple regression. Know statistical regression with forward, backward, stepwise methods. Polytomous variables.


Questions and Answers
  • 1. 
    The standard measure of the relationship between 2 variables is:
    • A. 

      The standard deviation

    • B. 

      The covariance

    • C. 

      The coefficient of determination

    • D. 

      The Pearson product-moment correlation coefficient

  • 2. 
    If performance on 2 variables is related, it is:
    • A. 

      Reciprocal

    • B. 

      Relational

    • C. 

      Correlated

    • D. 

      None of the above

  • 3. 
    Scatterplots:
    • A. 

      Theorize a relationship

    • B. 

      Provide a picture of the relationship between the 2 variables

    • C. 

      Demonstrate causality

    • D. 

      Represent measurement

  • 4. 
    A lower left to upper right pattern in a scatterplot demonstrates:
    • A. 

      Positive relationship or correlation

    • B. 

      Negative relationship or correlation

    • C. 

      Slight positive correlation

    • D. 

      Slight negative correlation

  • 5. 
    A perfect correlation is demonstrated by:
    • A. 

      All points lie on straight line

    • B. 

      Most points lie on straight line

    • C. 

      Some points lie on straight line

    • D. 

      None of the above

  • 6. 
    The correlation coefficient :
    • A. 

      Is the qualitative index of the r'ship

    • B. 

      Doesn't describe the measurement between 2 variables

    • C. 

      Similar to the correlation

    • D. 

      Is the quantitative index of the r'ship

  • 7. 
    The absolute value of the coefficient indicates the:
    • A. 

      Magnitude of the relationship

    • B. 

      Anything but the magnitude of the r'ship

    • C. 

      None of the above

  • 8. 
    A correlation soefficient of + .1 or - .1 indicates:
    • A. 

      A high correlation

    • B. 

      Low correlation

    • C. 

      No correlation

    • D. 

      Some corrrelation

  • 9. 
    No relationship between the variables is:
    • A. 

      Zero

    • B. 

      One

    • C. 

      Minus one

    • D. 

      Plus one

  • 10. 
    The slope:
    • A. 

      Indicates the general direction of the relationship

    • B. 

      Is always positive

    • C. 

      Is always negative

    • D. 

      None of the above

  • 11. 
    The width of the ellipse indicates what of the correlation coefficient:
    • A. 

      Extent of the r'ship

    • B. 

      The magnitude

    • C. 

      The absolute value

    • D. 

      All of the above

  • 12. 
    In essence, the product-moment correlation coefficient is:
    • A. 

      The sum of the cross-products

    • B. 

      The multiplication of cross-products

    • C. 

      The end result of 2 variables

    • D. 

      The mean of the cross-products of scores

  • 13. 
    The coefficient, r, is:
    • A. 

      The standardized scores

    • B. 

      The raw scores

    • C. 

      A combined result

    • D. 

      None of the above

  • 14. 
    The Pearson product-moment correlation coefficient is the: 
    • A. 

      Average cross-product of the raw scores of 2 variables.

    • B. 

      Average cross-product of the standard scores of 2 variables.

    • C. 

      Average summed scores of the standard scores of 2 variables

    • D. 

      Average summed scores of the raw scores of 2 variables.

  • 15. 
    Factors affecting the size of Pearson, r:
    • A. 

      Paired observations and nominal scale

    • B. 

      Paired observations and using an interval scale

    • C. 

      Paired observations and an ordinal scale

    • D. 

      Single observations and an interval scale

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