Katie Morbey
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Psychology Test sobre Week 3, creado por Katie Morbey el 19/05/2019.

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Katie Morbey
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Week 3

Pregunta 1 de 6

1

Which of the following are sources of variance?

Selecciona una de las siguientes respuestas posibles:

  • The within group differences

  • The error

  • The treatment

  • All of the these

Explicación

Pregunta 2 de 6

1

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 3 de 6

1

How can you improve the power of your experiment?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 4 de 6

1

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

Selecciona una de las siguientes respuestas posibles:

  • accepting the alternative hypothesis when incorrect

  • rejecting the null hypothesis when incorrect

  • accepting the null hypothesis when correct

  • rejecting the alternative hypothesis when incorrect

Explicación

Pregunta 5 de 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?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 6 de 6

1

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

Selecciona una de las siguientes respuestas posibles:

  • Cut in half

  • Unaffected

  • Increased

  • Also decreased

Explicación

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