__ 1. An AN OVA is used to evaluate the mean differences among three treatment conditions with a...

Question

__ 1. An AN OVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment. For this study, what is dftotal? a. 2 b. c. d XXXXXXXXXXIn an analysis of variance, which of the following is not true? a. SStotal = SSbetween + SSwithin b. dftotal = dfbetween + dfWithin c. d. MStotal = MSbetween + MSSwithin All three choices are true. 3. An analysis of variance produces SStotal = 80 and SSwithin = 30. For this analysis, what is SSbetween? a. 30 b. 50 c. 110 d. Cannot be determined without additional information 4. An AN OVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment. For this study, what is dfbetween treatments? a. 2 b. c. d XXXXXXXXXXA researcher reports an F-ratio with df= 2, 18 from an independent-measures research study. Based on the dfvalues, how many treatments were compared in the study, and what was the total number of subjects participating in the study? a. 2 treatments and 19 subjects b. c. d. 2 treatments and 20 subjects 3 treatments and 21 subjects 3 treatments and 22 subjects 6. For an ANOV A comparing three treatment conditions, what is stated by the null hypothesis (HO)? a. There are no differences between any of the population means. b. c. d. At least one of the three population means is different from another mean. All three of the population means are different from each other. None of the other choices is correct. 7. A research study comparing three treatments with n = 5 in each treatment produces T1 = 5, T2 = 10, T3 = 15, with SSI = 6, SS2 = 9, SS3 = 9, and LX2 = 94. For this study, what is SSwithin? a. b. c. d XXXXXXXXXXIn analysis of variance, what is measured by the MS values? Page 1 of_8 J
	
Document Preview: __ 1. An AN OVA is used to evaluate the mean differences among three treatment conditions with a sample of 
n = 12 participants in each treatment. For this study, what is dftotal? 
a. 2 
b. 11 
c. 
33 
d. 35 
2. In an analysis of variance, which of the following is not true? 
a. SStotal = SSbetween + SSwithin 
b. dftotal = dfbetween + dfWithin 
c. 
MStotal = MSbetween + MSSwithin 
d. All three choices are true. 
3. An analysis of variance produces SStotal = 80 and SSwithin = 30. For this analysis, what is SSbetween? 
a. 30 
b. 50 
c. 
110 
d. 
Cannot be determined without additional information 
4. An AN OVA is used to evaluate the mean differences among three treatment conditions with a sample of 
n = 12 participants in each treatment. For this study, what is dfbetween treatments? 
a. 2 
b. 
11 
c. 
33 
d. 35 
5. A researcher reports an F-ratio with df= 2, 18 from an independent-measures research study. Based on 
the dfvalues, how many treatments were compared in the study, and what was the total number of subjects 
participating in the study? 
a. 2 treatments and 19 subjects 
b. 
2 treatments and 20 subjects 
c. 
3 treatments and 21 subjects 
d. 
3 treatments and 22 subjects 
6. For an ANOV A comparing three treatment conditions, what is stated by the null hypothesis (HO)? 
a. There are no differences between any of the population means. 
b. 
At least one of the three population means is different from another mean. 
c. 
All three of the population means are different from each other. 
d. None of the other choices is correct. 
7. A research study comparing three treatments with n = 5 in each treatment produces T1 = 5, T2 = 10, T3 
= 15, with SSI = 6, SS2 = 9, SS3 = 9, and LX2 = 94. For this study, what is SSwithin? 
a. 
10 
b. 
24 
c. 
34 
d. 
68 
8. In analysis of variance, what is measured by the MS values?

Page 1 of_8 
Ja. 
Sample variance 
b. 
Population variance 
c. 
The average distance from one mean to another 
d. 
The total variability for the se:...

Robert · Accepted Answer

ANSWERS 
9) b 
10) b 
11) a 
12) a 
13) b 
14) b 
15) c 
16) a 
17) b 
18) b 
19) c 
20) c 
21) a 
22) a 
23) b 
24) a 
25) c 
26) a   
27) a 
28) b 
29) d 
30) a 
31) c 
32) d 
33) b 
34) a 
35) d 
36) TRUE 
37) TRUE 
38) TRUE 
39) TRUE 
40) TRUE 
41) FALSE 
42) TRUE 
43) TRUE 
44) FALSE 
45) FALSE
46)  
a. We use ANOVA used instead of a series of t tests to evaluate the mean difference among the three 
treatments because one problem with t -test approach is the increasing number of tests as the number 
of groups’ increases. The advantage of using ANOVA over multiple t-tests is that the ANOVA F-test will 
identify if any of the group means are significantly different from at least one of the other group means 
with a single test. 
 b. Ho: All treatment means are equal (μ1 = μ2 = μ3) 
     Ha: At least two treatment means are significantly different 
  
We use α = 0.05 the given level of significance 
 
The test statistic selected is F. The method of comparing the three treatments is 
  
ANOVA. 
 T1 = 3, T2 = 12, T3 = 12 
 G = 3 + 12 + 21 = 36 
  
N = 21 
CF = G^2 /N = 36^2 /21 = 61.71 
SS (Total) = 114 – 61.71= 52.29 
SS (Within) = 7.5 + 4 + 3.5 = 15 
SS (Between) = 52.29 – 15 = 37.

__ 1. An AN OVA is used to evaluate the mean differences among three treatment conditions with a sample of n = 12 participants in each treatment. For this study, what is dftotal? a. 2 b. c. d...

Solution

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment