Questions 1-35. Five hundred students complete the "Census at School" survey. Each was asked how many hours per week they spent doing homework. A researcher uses a quasi-experimental design to compare the average time spent doing homework per week to high school students in different grades. The research question is, "Do students in different grades of high school spent significantly different amounts of time doing homework per week?" Five students were randomly selected from each grade; the dart is presented below.

Grade 9 10 11 12

hours Spent 3 2 10 19

Doing 2 1 4 10

Homework 1 5 3 12

5 2 10 5

5 4 2 7

1. Which of the following best completes the sentence, __________ is/are the independent variable and__________ is/are the dependent variable.

Group of answer choices

The students, the grade level

The grade level, the students

The amount of time doing homework, the grade level

The grade level, the amount of time doing homework

Question 2

2. Which of the following is true?

Group of answer choices

A fixed-effects ANOVA should be done since all grade level to which inferences are made are included in the study.

A fixed-effects ANOVA should be done since all grade level to which inferences are made are not included in the study.

A random-effects ANOVA should be done since all grade level to which inferences are made are included in the study.

A random-effects ANOVA should be done since all grade level to which inferences are made are not included in the study.

Question 3

3. Which of the following are the correct alternative statistical hypotheses?

Group of answer choices

:1234Ha:1234

:1<2<3<4Ha:1<2<3<4

:1>2>3>4Ha:1>2>3>4

:Ha:ijfor somei, jcombination

Question 4

4. Identify each of the elements of the model equation:=++Yij=+j+ij

Group of answer choices

A.Index of the subject within a group

B.Grand mean of all observations

C.Number of grade levels in the study

D.Observed hours spent doing homework for each individual

E.Error effect of each individual

F.Index of the group

G.Treatment effect of each grade level

H.Total number of subjects within each group

1.

2.Yij

3.

4.j

5.ij

6.group

7.i

8.j

9.n

10.p

Question 5

Calculate the treatment effects of four groups. (Enter the value in the form #.###)

5.1^1= _______________

Question 6

Calculate the treatment effects of four groups. (Enter the value in the form #.###)

6.2^2= _______________

Question 7

Calculate the treatment effects of four groups. (Enter the value in the form #.###)

7.3^3= _______________

Question 8

Calculate the treatment effects of four groups. (Enter the value in the form #.###)

8.4^4= _______________

Question 9

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

9. SSB = _________________

(Enter the value in the form #.###)

Question 100.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

10. SSW = _________________

(Enter the value in the form #.###)

Question 110.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

11. SST = _________________

(Enter the value in the form #.###)

Question 120.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

12.dfB = _________________

(Enter the value as a whole number)

Question 130.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

13.dfW= _________________

(Enter the value as a whole number)

Question 140.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

14.dfT= _________________

(Enter the value as a whole number)

Question 150.5pts

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

15. MSB= _________________

(Enter the value in the form #.###)

Question 16

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

16. MSW = _________________

(Enter the value in the form #.###)

Question 17

Calculate the one-way ANOVA sums of squares, degree of freedom, mean squares, and F test statistic by hand.

17. F = _________________

(Enter the value in the form #.###)

Question 18

18. What is the critical F value at a .05 level of significance?

(Enter the value in the form #.###)

Question 19

19. What is the critical F value at a .01 level of significance?

(Enter the value in the form #.###)

Question 20

20. Analyze this data using SPSS. What is the reportedp-value?

(Enter the value in the form #.###)

Question 210.5pts

21. Which of the following isnotan assumption of the completely randomized design that should be checked prior to running the ANOVA?

Group of answer choices

Observations are normally distributed within groups.

Observations between groups are independent.

Group means are equal.

Group variances are equal.

All of the above statements are assumptions of ANOVA.

Question 221pts

22. What statistical test is used to assess the normality of the distribution?

Group of answer choices

Levene's Test

Shapiro-Wilk Test

Welch's Test

Absolute Normality Test

Question 231pts

23. Test the assumption of normality. How many groups donothave normally distributed data (p< .05)?

Group of answer choices

0

1

2

3

4

Question 241pts

24. What statistical test is used to assess the homogeneity of variance?

Group of answer choices

Levene's Test

Shapiro-Wilk Test

Welch's Test

Absolute Normality Test

Question 25

25. Test the assumption of homogeneity of variances. what is the statistic used to test the assumption provided in the SPSS output?

(Enter the value in the form #.###)

Question 26

26. What is the conclusion of the assumption of homogeneity of variance (p< .05)?

Group of answer choices

All groups have equal variances.

All groups have different variances.

At least one group variance is different from the others.

Question 27

27. Based on the conclusions of the assumptions of normality and homogeneity of variances, what adjustments are needed?

Group of answer choices

Welch's adjustment is necessary.

The data should be transformed.

A non-parametric method should be used.

No adjustment is necessary.

Question 28

28. What is the conclusion to the ANOVA test, applying any necessary adjustments (p< .05)?

Group of answer choices

All groups have equal means.

All groups have different means.

At least one group mean is different from the others.

Question 29

29. What is the conclusion to the ANOVA test, applying any necessary adjustments (p< .01)?

Group of answer choices

All groups have equal means.

All groups have different means.

At least one group mean is different from the others.

Question 30

30. Calculate the measure of association2R~2.

(Enter the value in the form #.###)

Question 31

31. Calculate the measure of association2=(*)+^2YA=SSB-(dfB*MSW)SST+MSW.

(Enter the value in the form #.###)

Question 32

32. Which of the following is the correct interpretation of the2^2?

Group of answer choices

2^2of the variability in grade level is accounted for by the hours of studying.

2^2of the variability in the hours of studying is accounted for by grade level.

121-^2of the variability in grade level is accounted for by the hours of studying.

121-^2of the variability in the hours of studying is accounted for by grade level.

Question 33

33. Calculate the measure of effect size=212f=^21-^2.

(Enter the value in the form #.###)

Question 34

34. This effect is

Group of answer choices

Small

Moderate

Large

Question 350.5pts

35. Use G*Power to estimate the power of study.

(Enter the value in the form #.###)

Question 36

Questions 36-43. Twelve dogs from each of four different breeds (basenji, shetland sheepdog, wire-haired fox terrier, and beagle) participated in obedience training. At the end of the training, each animal was taken into a room with the handler and a bowl of meat. the dog was hungry, but the handler prevented it from eating for three minutes by squirting the animal with a water bottle and saying "No!" After this period of restraint, the handler left the room, and the length of item it took the dog to begin to eat the meat was recorded.Was the time taken to eat significantly different for different breeds?

Use the DogTraining.sav file in D2L and SPSS to complete any analysis.

36. Which of the following best completes the sentence, __________ is/are the independent variable and__________ is/are the dependent variable.

Group of answer choices

The dogs, the breed

The caretaker, the breed

The dogs, time to eat

The breed, time to eat

Question 37

37. which of the following is the correct design notation?

Group of answer choices

CR-2

CR-3

CR-4

CR-5

CR-25

Question 38

38. Test the assumption of normality. How many groups donothave normally distributed data (p< .05)?

Group of answer choices

0

1

2

3

4

Question 39

39. Test the assumption of homogeneity of variances. what is the statistic used to test the assumption provided in the SPSS output?

(Enter the value in the form #.###)

Question 40

40. What is the conclusion of the assumption of homogeneity of variance (p< .05)?

Group of answer choices

All groups have equal variances.

All groups have different variances.

At least one group variance is different from the others.

Question 41

41. Based on the conclusions of the assumptions of normality and homogeneity of variances, what adjustments are needed?

Group of answer choices

Welch's adjustment is necessary.

The data should be transformed.

A non-parametric method should be used.

No adjustment is necessary.

Question 42

42. What is the statistic that should be reported for the ANOVA results?

Group of answer choices

F(3,44) = 12.172

F(3,47) = 12.172

F(3,23.331) = 12.172

F(3,44) = 29.673

F(3,23.331) = 29.673

Question 43

43. What is the conclusion to the ANOVA test, applying any necessary adjustments (p< .05)?

Group of answer choices

All groups have equal variances.

All groups have different variances.

At least one group variance is different from the others.

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