Katie Morbey
Quiz von , erstellt am more than 1 year ago

Psychology Quiz am Week 3, erstellt von Katie Morbey am 19/05/2019.

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Katie Morbey
Erstellt von Katie Morbey vor etwa 5 Jahre
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Week 3

Frage 1 von 6

1

Which of the following are sources of variance?

Wähle eine der folgenden:

  • The within group differences

  • The error

  • The treatment

  • All of the these

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Frage 2 von 6

1

Why would you use post-hoc tests instead of planned contrasts?

Wähle eine der folgenden:

  • We are interested in testing all possible comparisons

  • There is a need to improve the power of the test

  • We are not interested in testing all possible comparisons

  • There are not that many comparisons to make

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Frage 3 von 6

1

How can you improve the power of your experiment?

Wähle eine der folgenden:

  • Reducing the degrees of freedom for the residual source of variance

  • Increasing the number of levels of treatment

  • Increasing the number of participants

  • All of these

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Frage 4 von 6

1

The power of a test is the probability of...

Wähle eine der folgenden:

  • accepting the alternative hypothesis when incorrect

  • rejecting the null hypothesis when incorrect

  • accepting the null hypothesis when correct

  • rejecting the alternative hypothesis when incorrect

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Frage 5 von 6

1

Imagine that 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 intervention. If you want to maximize the power of the study, which groups would you use?

Wähle eine der folgenden:

  • two groups: 1) immediately after the stroke 2) three weeks later

  • two groups: 1) three weeks later 2) six months later

  • two groups: 1) immediately after stroke 2) six months later

  • three groups: 1) immediately after the stroke 2) three weeks later 3) 6 months later

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Frage 6 von 6

1

If you take steps to minimize a Type I error, then the probability of making a Type II error is

Wähle eine der folgenden:

  • Cut in half

  • Unaffected

  • Increased

  • Also decreased

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