Question 1 All variance measurements used in ANOVA represent: Distances from a s

Question

Question 1

All variance measurements used in ANOVA represent:

Distances from a score to a mean

Distances from a mean to the standard deviation

The range divided by the mean

The mean multiplied by the sample size

2 points

Question 2

If the Between Groups degrees of freedom was 3 in a one-way ANOVA, how many groups were in the study?

2

4

3

6

2 points

Question 3

In regard to the null hypothesis in analysis of variance:

The null hypothesis is that the means are different

The null hypothesis is different from the research hypothesis

The research hypothesis states that the means are the same

The null hypothesis states that at least one mean is 0 (null)

2 points

Question 4

The within-groups estimate of the population variance represents

The probability of finding a difference between groups

The variability among the subjects within each group

The research hypothesis stated in terms of variance

The inverse of the null hypothesis

Distances from a score to a mean

Distances from a mean to the standard deviation

The range divided by the mean

The mean multiplied by the sample size

Explanation / Answer

Question 1

a. Distances from a score to a mean.

Question 2

b. 4

The degrees of freedom for between groups is given by, k-1 where k is the no od roups. Here we know that k-1 = 3 or k=4. Therefore the no of groups is 4.

Question 3

c. The research hypothesis states that the means are the same.

The null hypothesis of interest is always that the means are equal. The alternate hypothesis is that atleast for one of the mean is different.

Question 4

b. The variability among the subjects within each group.

i.e. The variation due to differences within individual samples is called within group variation.

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