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Research Methods IV - Week 3 Post Hoc Tests

Brage Haavik 10 questions 5.0 (6 ratings)

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Questions in this quiz (10)

  1. 1Which of the following are sources of variance?
    1. AThe error
    2. BThe variance
    3. CThe treatment
    4. DAll of the above
  2. 2Why would you use post-hoc tests instead of planned contrasts?
    1. AWe are interested in testing all possible comparisons
    2. BWe are not interested in testing all possible comparisons
    3. CThere is a need to improve the power of the test
    4. DThere are not many comparisons to make
  3. 3How can you improve the power of your experiment?
    1. AIncrease the number of participants
    2. BReducing the degrees of freedom for the residual source of variance
    3. CAll of these
    4. DIncreasing the number of levels of treatment
  4. 4Examine the following table, how many follow-up comparisons would you have to make if you choose a post-hoc style of testing?Image for question 4
    1. A3
    2. B2
    3. C4
    4. D5
  5. 5Examine the followng ANOVA SPSS output. If you ran post-hoc tests using Bonferroni correction, what level of alpha should you use per comparison?Image for question 5
    1. A0.005
    2. B0.05
    3. C0.01
    4. D0.001
  6. 6In the following study, the researcher ran a series of post-hoc tests using LSD. What was the alpha-value per comparison?Image for question 6
    1. A0.30
    2. B0.05
    3. C0.15
    4. D0.01
  7. 7The power of a test is the probability of...
    1. ARejecting the null hypothesis when it is incorrect
    2. BAccepting the null hypothesis when correct
    3. CAccepting the alternative hypothesis when incorrect
    4. DRejecting the alternative hypothesis when incorrect
  8. 8Imagine you are a Clinical Neuropsychologist who works with language difficulties shown by aphasics resulting from a brain stroke. You are interested in studying the impact of a particular treatment as a function of the time interval between the time of the lesion and the time of the intervention. If you want to maximize the power of your study, which groups would you use?
    1. AThree groups: 1)Immediately after the stroke, 2) three weeks later, 3) six months later
    2. BTwo groups: 1)Immediately after the stroke, 2) six months later
    3. CTwo groups: 1) three weeks later, 2) six months later
    4. DTwo groups: 1)Immediately after the stroke, 2) three weeks later
  9. 9Examine the following graph, if you wanted to demonstrate the the 9th grade students gave higher food ratings than the older ones, which contrast coefficients would you use?Image for question 9
    1. A3 -2 -1 0
    2. B2 -1 -1 0
    3. C3 -1 -1 -1
    4. D2 1 0 -3
  10. 10If you take steps to minimize Type 1 error, then the probability of making a Type 2 error is
    1. ACut in half
    2. BIncreased
    3. CDecreased
    4. DUnaffected

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Description
Quiz on Research Methods IV - Week 3 Post Hoc Tests, created by Brage Haavik on 12/04/2019.
Language
English
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5.0 out of 5 · 6 ratings
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