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Q:

When the assumption of sphericity is violated, what action is needed?

A:

correct the model degrees of freedom and correct the error degrees of freedom

Q:

Which of the following statements about the assumption of sphericity is not true?

A:

it is the assumption that the varianves for levesl of a repeated-measures variable are equal

Q:

How many dependent variables does a two-way ANOVA have?

A:

one

Q:

What would the levels of the independent variables be for a two-way ANOVA investigating the effect of four different treatments for depression and gender?

A:

4 and 2

Q:

How many independent variables were used and how were they measured in a three-way independent ANOVA?

A:

Three independent variables all measured using different entities

Q:

A researcher measured people’s physiological reactions while watching a horror film and compared them to when watching a comedy film, and a documentary about wildlife. Different people viewed each type of film. The resulting data were normally distributed and the variances across groups were similar. What test should be used to analyse the data?

A:

independent analysis of variances

Q:

When variances across independent groups are unequal, which of the following is not an appropriate course of action?

A:

Friedman's ANOVA

Q:

Which of these statements describes a Bonferroni correction?

A:

You apply a criterion for significance based on the usual criterion for significance (.05) divided by the number of tests performed.

Q:

Levene’s test tests whether:

A:

The variances in different groups are equal.

Q:

Which of the following is not a type of post hoc test?

A:

Cramér

Q:

A researcher was interested in stress levels of lecturers during lectures. She took the same group of 8 lecturers and measured their anxiety (out of 15) during a normal lecture and again in a lecture in which she had paid students to be disruptive and misbehave. What test is best used to compare the mean level of anxiety in the two lectures?

A:

Paired-samples t-test

Q:

A researcher measured the same group of people’s physiological reactions while watching horror films and compared them to when watching comedy films, and a documentary about wildlife. The resulting data were normally distributed. What test should be used to analyse the data?

A:

repeated-measures analysis of variance

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