Question

 

2) In anova the f-ration is of?

a) sample mean (M)

b) sample means (M) divided by variances (SS)

c) Two variances (SS) each divided by a corresponding degree of freedom (df)

d) Sample variances (SS) divided by sample means (M)

3) For an independent measures research study, Cohen's d helps to describe?

a) The risk type I error

b) The risk for type II error

c) The size of the effect between two samples means without taking into account sample size

d) whether the difference between sample means is due to Type I error rate

5) Under what circumstances are post hoc tests necessary?

a) when you reject the null hypothesis with exactly 2 treatment conditions

b) when you reject the null hypothesis with 3+ treatment conditions

c) when you fail to reject the null hypothesis with exactly 2 treatment conditions

d) when you fail to reject the null hypothesis with 3+ treatment conditions

15) A researcher report that there is a significant between two treatments at the .05 level of significance. This means that

a) if the researcher repeated the experiment there is a 95% probability that the same decision would be reached

b) the difference obtained in the experiment is at least 5% larger than the standard error

c) there is a 5% probability (or less) that the difference occurred simply by chance without any treatment and you committed a type I error

d) The average score for one treatment is at least 5% higher than the average score for the other treatment

21) For which of the following situations would a repeated-measures study be appropriate?

a) Compare attitude score for males v. females

b) Compare personality scores for indivituals diagnosed with eating disorder

c) Compare salary levels for indivituals with and without college degrees

d) compare reaction times before and after taking a pain medication

23) The purpose of a post hoc test is

a) To determine whether of not a Type I error was committed

b) To determine how much difference exists between variances

c) To determine which treatment means are significantly different in a design with 3+ treatments

d) To determine whether a Type II error was committed

Answer 1

2) In anova the f-ration is of?

The correct option is:

c) Two variances (SS) each divided by a corresponding degree of freedom (df)

 

3) For an independent measures research study, Cohen's d helps to describe?

The correct option is:

c) The size of the effect between two samples means without taking into account sample size

 

5) Under what circumstances are post hoc tests necessary?

The correct option is:

b) when you reject the null hypothesis with 3+ treatment conditions

 

15) A researcher report that there is a significant between two treatments at the .05 level of significance. This means that

The correct option is:

c) there is a 5% probability (or less) that the difference occurred simply by chance without any treatment and you committed a type I error

 

21) For which of the following situations would a repeated-measures study be appropriate?

The correct option is:

d) compare reaction times before and after taking a pain medication

 

23) The purpose of a post hoc test is

The correct option is:

c) To determine which treatment means are significantly different in a design with 3+ treatments