1. In an ANOVA analysis, all groups must have the same number of samples? True o

ID: 3291225 • Letter: 1

Question

1. In an ANOVA analysis, all groups must have the same number of samples? True or False

2. An ANOVA comparing two groups is equivalent to an independent sample test? True or False

How many subjects (total) were in this study?

4. ANOVA Analysis:

df Sum Sq Mean Sq F Value P Value

Between 2 3.7663 1.8832 4.8461 0.1591

Within 27 10.4921 0.3886

How many different groups were in this study?

DF Sum Sq Mean Sq F Value P Value Between 2 3.7663 1.8832 4.8461 0.1591* Within 27 10.4921 0.3886

Ans:

1)False

2)True

3), and 4)

n=total number of subjects

k=number of groups

degrees of freedom for between groups=k-1=2

k=3

i.e. there are 3 number of groups.

degrees of freedom for within groups=n-k=27

Total degrees of freedom=n-1=2+27=29

n=30

i.e. there are total 30 number of subjects.

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