Exam 3 Review

60 Questions | Total Attempts: 34

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Treatment Quizzes & Trivia

Questions and Answers
  • 1. 
    An ____________________ is a hypothesis-testing procedure that is used to evaluate mean differences between two or more treatments (or populations).
  • 2. 
    An ____________________ uses sample data to make inferences about three or more treatments (or populations).
  • 3. 
    When sample means are widely dispersed, the mean distribution has  ____________________ variance.
    • A. 

      High

    • B. 

      Low

    • C. 

      Medium

  • 4. 
    When sample means are closely condensed, the mean distribution has ____________________ variance.
    • A. 

      High

    • B. 

      Low

    • C. 

      Medium

  • 5. 
    A ____________________ is used when you have one independent variable (i.e. psychological treatment) with more than two levels (i.e. control, medication, and therapy) and one dependent variable (i.e. overall psychological health).
  • 6. 
    ____________________: the total probability of a Type I error that is accumulated from all of the individual tests in an experiment.
  • 7. 
    Every time you add a test to an experiment, you ____________________ the risk of Type I error.
    • A. 

      Increase

    • B. 

      Decrease

    • C. 

      Don't affect

  • 8. 
    The ANOVA performs all three comparisons simultaneously in one hypothesis test, ____________________ the risk experimentwise error. 
    • A. 

      Eliminating

    • B. 

      Increasing

    • C. 

      Not affecting

  • 9. 
    ____________________ variance: how much of the variability in the scores results from general differences between treatment conditions.
  • 10. 
    What factors affect between treatment variance in a one-way ANOVA?
    • A. 

      Treatment effect

    • B. 

      Individual differences

    • C. 

      Experimental error

  • 11. 
    ____________________ variance: how much of the variability in the scores results from variability within each sample.
  • 12. 
    What factors affect within treatment variance in a one-way ANOVA?
    • A. 

      Treatment affect

    • B. 

      Individual differences

    • C. 

      Experimental error

  • 13. 
    ____________________: variability due to intrinsic differences between participants (i.e. age, gender, etc.)
  • 14. 
    ____________________: variability due to imperfect experimental conditions or measurements.
  • 15. 
    When we measure between group variability, we attempt to be left only with variability due to ____________________.
    • A. 

      Individual differences

    • B. 

      Treatment effect

    • C. 

      Experimental error

  • 16. 
    The ____________________ for a one-way ANOVA says all three (or more) populations are equal.
  • 17. 
    H0: M1 = M2 = M3 is the _________________________ for a one-way ANOVA.
  • 18. 
    The numerator and the denominator are measuring the same variance when F = _________________________.
    • A. 

      1.00

    • B. 

      2.00

    • C. 

      3.00

    • D. 

      0

  • 19. 
    When do you follow up with a post-hoc test?
    • A. 

      When you reject the null hypothesis

    • B. 

      When you fail to reject the null hypothesis

    • C. 

      When you either reject the null hypothesis or fail to reject the null hypothesis

  • 20. 
    The _________________________ for a one-way ANOVA says at least one population mean is different from the others.
  • 21. 
    There is no statistical way to write the _________________________ hypothesis.
    • A. 

      Null

    • B. 

      Alternative

  • 22. 
    F-ratios are clustered near 1.00 when there is a _________________________ df.
    • A. 

      Large

    • B. 

      Small

  • 23. 
    The F distribution is more spread out when there is a _________________________ df.
    • A. 

      Small

    • B. 

      Large

  • 24. 
    The _________________________ measures the treatment effect (to obtain this value, you cross out what is common in the numerator, between treatments, and the denominator, within treatments).
  • 25. 
    Between treatment variance is the _________________________ in the one-way ANOVA.
    • A. 

      Numerator

    • B. 

      Denominator