Question

1. A “one-way” between-subjects ANOVA is conducted when data are recorded in one group.

True

False

2. Post hoc tests control for the total alpha level for a series of tests conducted on the same data.

True

False

3. All post hoc tests control for the effect size of a significant result.

True

False

4. A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors.

True

False

5. A researcher conducts another one-way between group ANOVA.
She obtains a SS_{BG} of 76, a SS_{Total} of 200, a
MS_{E} of 5, and has a df_{BG} of 10. Calculate
Omega Squared.

6. The complexity of the two-way ANOVA differs from that of the
*t* tests and the one-way ANOVAs in that,

two factors can be observed using the two-way ANOVA, but not
using the |
||

an interaction can be observed using the two-way ANOVA, but not
using the |
||

three hypothesis are made with one statistical test using the
two-way ANOVA, but not using the |
||

all of the above |

Answer #1

1. A “one-way” between-subjects ANOVA is conducted when data are recorded in one group. (False)

2. Post hoc tests control for the total alpha level for a series of tests conducted on the same data. (False)

3. All post hoc tests control for the effect size of a significant result. (True)

4. A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors. (True)

5.

6. ans-> all of the above

1. Using the two-way mixed ANOVA, different participants are
observed at each level of the between-subjects factor, and the same
participants are observed across the levels of the within-subjects
factor. TRUE OR FALSE
2. A researcher computes two 2 × 2 between-subjects ANOVAs. In
Study 1, he observes 8 participants in each cell; in Study 2, he
observes 12 participants in each cell. Which study is associated
with a larger value for degrees of freedom for the A × B...

There are two F ratios you can derive from an one-way
within-subjects ANOVA.
a. true
b. false

1. What are the differences between planned contrasts (or
planned comparisons) and post hoc tests? Why are they used after
performing a one-way ANOVA? How do you decide which to use of the
two types of follow-up tests?
2. What are the main differences between between- and
within-groups one-way ANOVAs? What determines which type of test
should be used? Which is a stronger test and why?

Answer the one-way ANOVA questions using the data below. Use α =
0.05.
1
2
3
4
53
49
47
42
51
34
35
21
39
36
34
39
30
12
46
23
39
37
36
34
47
25
35
30
23
33
28
31
a) Compute the preliminary statistics below.
SSBG = ; dfBG
=
SSWG = ; dfWG
=
SST = ; dfT =
b) Compute the appropriate test statistic(s) to
make a decision about H0.
critical value = ; test statistic...

Answer the one-way ANOVA questions using the data below. Use
α = 0.01.
1
2
3
4
53
49
47
45
51
34
44
44
25
36
34
39
30
12
46
42
49
37
36
34
47
25
37
30
27
33
28
31
a. Compute the preliminary statistics below.
SSBG = ________ ; dfBG = _________
SSWG = ________ ; dfWG = ________
SST = ___________ ; dfT = _________
b. Compute the appropriate test statistic(s) to make...

1. In one-way ANOVA, involving three groups, the alternative
hypothesis would be considered correct if, in the population,
a. all means were equal
b. two means are equal but the third is different
c. all three means have different values
d. either (b) or (c) above is true
QUESTION 2 When Null is true for a one-way ANOVA, variation of
the group means is a reflection of
a. inherent variation
b. differential treatment effects
c. nondifferential treatment effects
d. a...

Answer the within-subjects ANOVA questions using the data below.
Use α = 0.05.
1
2
3
4
53
49
47
48
51
34
44
44
39
36
34
39
30
41
46
42
39
47
36
34
47
37
35
30
27
33
28
31
a) Compute the preliminary statistics below.
SSBG = ; dfBG =
SSBS = ; dfBS =
SSE = ; dfE =
SST = ; dfT =
b) Compute the appropriate test statistic(s) to
make a decision about H0.
critical...

Q1. Why would you perform a one-way ANOVA over
a t-test? Is the answer, when the population means of only two
groups is to be compared, a t-test is used, but
when means of more than two groups are to be compared,
ANOVA is preferred (Y/N)
Q2. A rag-tag group of bandits crash the party
to steal candy. In a frenzy, you carefully record the numbers of
different candies that group grabbed. You arrange
the data in a table, below:...

True or False
a.) R squared=0 meants that there is no relationships between
the two variables.
b.) Using the linear regression line, y= a+bx+e, if a=0 and e =
0 then R squared = 0.
c.) In one-way ANOVA, a typical null hypothesis is: all means of
groups are equal .
d.) In a recent twin study from researchers at King’s College
London, the researchers wanted to first test whether identical
twins show statistically significantly different thigh muscular
power. To...

1. Which of the following statements are true of One-way
ANOVA test?
a. It is a robust test (with sufficiently large samples and
relatively equal groups) even when the sample data are
statistically significantly different from normal distribution.
b. All of the other statements are correct.
c. It involves a dependent variable measured on a continuous
scale.
d. It involves an independent variable measured on a categorical
scale with 2+ groups/categories.
e.It compares the mean/average scores of the 2+ groups...

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