1. A repeated-measures research study comparing three treatments with a sample o
ID: 3360180 • Letter: 1
Question
1. A repeated-measures research study comparing three treatments with a sample of n = 10 participants produced an F-ratio of F = 3.95. Based on this result, which of the following is the correct statistical decision.
Fail to reject the null hypothesis with either = .05 or = .01.
Reject the null hypothesis with either = .05 or = .01.
Reject the null hypothesis with = .05 but not with = .01.
cannot answer without additional information
2.The formula for dfbetween subjects is
N - 1
n - 1
N - k
k - 1
3.Exhibit 14-1
The following data is from a repeated-measures study.
Treatments
Subject
I
II
III
P-totals
A
0
1
2
3
G = 18
B
1
1
4
6
X2 = 64
C
2
1
6
9
T = 3
T = 3
T = 12
SS = 2
SS = 0
SS = 8
Refer to Exhibit 14-1. If SS between subjects is equal to 6, then the SS for the error term would be ____.
4
16
6
12
4.For a repeated-measures ANOVA, which of the following is computed differently, compared to an independent-measures ANOVA?
the denominator of the F ratio
within treatment SS
between treatment SS
total SS
5.A two-factor experiment with two levels of factor A and four levels of factor B would consist of ____ separate treatment conditions and the dfbetween treatments (between cells) would be ____.
6, 5
4, 3
2, 1
8, 7
6.How many separate samples would be needed for a two-factor, independent-measures research study with 2 levels of factor A and 3 levels of factor B?
5
3
2
6
7..A two-factor research study compares two levels of factor A and three levels of factor B. If SSA = 30, then what is the value for MSA?
10
15
30
cannot be determined without additional information
Treatments
Subject
I
II
III
P-totals
A
0
1
2
3
G = 18
B
1
1
4
6
X2 = 64
C
2
1
6
9
T = 3
T = 3
T = 12
SS = 2
SS = 0
SS = 8
Explanation / Answer
Result:
1. A repeated-measures research study comparing three treatments with a sample of n = 10 participants produced an F-ratio of F = 3.95. Based on this result, which of the following is the correct statistical decision.
Fail to reject the null hypothesis with either = .05 or = .01.
Reject the null hypothesis with either = .05 or = .01.
Answer: Reject the null hypothesis with = .05 but not with = .01.
cannot answer without additional information
2.The formula for dfbetween subjects is
N - 1
Answer: n - 1
N - k
k - 1
3.Exhibit 14-1
The following data is from a repeated-measures study.
Treatments
Subject
I
II
III
P-totals
A
0
1
2
3
G = 18
B
1
1
4
6
X2 = 64
C
2
1
6
9
T = 3
T = 3
T = 12
SS = 2
SS = 0
SS = 8
Refer to Exhibit 14-1. If SS between subjects is equal to 6, then the SS for the error term would be ____.
Answer: 4
16
6
12
Analysis of Variance
Source
DF
Adj SS
Adj MS
F-Value
P-Value
sub
2
6.000
3.000
3.00
0.160
grp
2
18.000
9.000
9.00
0.033
Error
4
4.000
1.000
Total
8
28.000
4.For a repeated-measures ANOVA, which of the following is computed differently, compared to an independent-measures ANOVA?
Answer: the denominator of the F ratio
within treatment SS
between treatment SS
total SS
5.A two-factor experiment with two levels of factor A and four levels of factor B would consist of ____ separate treatment conditions and the dfbetween treatments (between cells) would be ____.
6, 5
4, 3
2, 1
Answer; 8, 7
6.How many separate samples would be needed for a two-factor, independent-measures research study with 2 levels of factor A and 3 levels of factor B?
5
3
2
Answer: 6
7..A two-factor research study compares two levels of factor A and three levels of factor B. If SSA = 30, then what is the value for MSA?
10
15
Answer: 30
cannot be determined without additional information
Treatments
Subject
I
II
III
P-totals
A
0
1
2
3
G = 18
B
1
1
4
6
X2 = 64
C
2
1
6
9
T = 3
T = 3
T = 12
SS = 2
SS = 0
SS = 8
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