Question

**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 on the dependent variable.

**2. In an ANOVA, if none of the groups differ
statistically significantly from each other, then the
calculated/derived Fvalue would be:**

a. 0.50 or very close to 0.50

b. 1.00 or very close to 1.00

c. 0.00 or very close to 0.00

e. 0.01 or very close to 0.01

**3. In One-way ANOVA test, ANOVA/Welch are considered
omnibus tests because**

a.there are two or more null hypotheses.

b. None of the other answers are correct

c. there are two outcomes but three alternatives.

e.they test multiple means all at once using a single null hypothesis.

Answer #1

(1)

Correct option:

**b. All of the other statements are
correct.**

(2)

Correct option:

**b. 1.00 or very close to 1.00**

Explanation:

When there is no group difference, the expected valu of the numerator and denominator will be equal.

(3)

Correct option:

**(e) they test multiple means all at once using a single
null hypothesis.**

Explanation:

One way ANOVA is an omnibus test statistic and cannot tell us which specific groups are significantly different from each other. It tells us only that at least 2 groups are different.

Question 9
If you conduct a
One-Way ANOVA in SPSS and it is significant, which of the following
statements is true?
not all population
means are equal
it does not indicate
which groups significantly differ from others
all statements are
true
reject the null
hypothesis
Question 7
In an ANOVA, the
higher the F ratio, the more likely you are to
make a Type I
Error
make a Type II
Error
correctly reject the
null hypothesis
correctly accept the
null...

Suppose that the overall F-test obtained from performing a
one-way ANOVA resulted in a p-value that was not statistically
significant. Which of the following CANNOT be true?
The variability within the groups is very large compared to
between-group variability.
The variability between the groups is very large compared to
within-group variability.
The ratio of the between and within variability was not
sufficiently large.
The F-statistic was not larger than the critical value obtained
from the F-distribution.

Create a hypothetical scenario where you need to use a one-way
ANOVA to test your hypothesis. In a Word document or PDF answer the
questions below. Label your submission clearly so it's easy to
figure out which sections you're answering. 1. In a couple
sentences, describe the study design and how the independent and
dependent variables were measured (mentioning the scale of
measurement: nominal, ordinal, interval, ratio). 2. In SPSS, create
a set of data that has at least 10...

Practice Exercise 13: One -way Analysis of Variance (ANOVA)
1. When is it appropriate to use a one-way ANOVA to analyze
data?
2. What letter is use the designate the test statistic used in
the one-way ANOVA?
3. What are the two types of variance that are examined when
conducting an analysis of variance?
4. Which type of variance is related to the effect of a
treatment?
5. Does the analysis of variance test differences between two
specific groups?
Use...

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...

Part A: Which of the following is most accurate?
A. MS error estimates the error variance only when the null
hypothesis is true.
B. MS treatment estimates the error variance only when the null
hypothesis is true.
C. None of above.
D If the ratio of MS treatment and MS error is close to one, we
reject the null hypothesis.
Part B:
What does rejecting the null hypothesis imply in a one-way ANOVA
assuming k groups?
There is no difference...

exercise and the tukey hsd test: in how it works 11.1, we
conducted a one-way between-groups anova on an abbreviated data set
from research by irwin and colleagues (2004) on adherence to an
exercise regimen. Participants were asked to attend a monthly group
education program to help them change their exercise behavior.
Attendance was taken and participants were divided into three
categories: those who attended fewer than 5 sessions, those who
attended between 5 and 8 sessions, and those who...

ANOVA ONE-WAY WITHIN SUBJECTS DESIGN 1. A group of clinicians
who are members of the U.S. military are concerned with the morale
of troops serving in war regions. They hypothesize that the number
of tours a soldier has served significantly affects morale. To test
this hypothesis, they select a sample of eight soldiers who served
three tours in war regions and ask them to rate their morale during
each tour they served in. Lower ratings indicate lower morale. The
table...

1. After performing an ANOVA test, with (3,4) degrees of
freedom, for data collected during an experiment trying to
determine if there is at least one difference between groups. You
get a calculated F value of 7.52. Using the table below, find the
appropriate critical F value. What should be your conclusion(s),
based on those 2 F values and α?
Select ALL that apply
Critical values of F (α= 0.05)
Group of answer choices:
A. My calculated F value is...

9. For which of the
following situations is the independent groups
t-test appropriate (if inappropriate, why?):
a. The independent
variable is infant birth weight at one week (normal vs high); the
dependent variable is resting heart rate.
b. The independent
variable is radiation treatment on throat cancer patients (one
group getting a low dose and the other a high dose treatment); the
dependent variable is white blood cell count.
c. The IV is infant
birth weight (grouped as low vs high);...

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