Question

Choose the statement that best describes the purpose of ANOVA.

A) ANOVA is a procedure for comparing the means of several
groups.

B) ANOVA is a procedure for comparing different categories for
several groups.

C) The ANOVA procedure will reveal whether the means of several
groups are different and which group or groups have a different
mean.

D) None of these

Answer #1

The one-way ANOVA compares the means between the groups you are interested in and determines whether any of those means are statistically significantly different from each other. Specifically, it tests the null hypothesis:

where *µ* = group mean and *k* = number of groups.
If, however, the one-way ANOVA returns a statistically significant
result, we accept the alternative hypothesis (H_{A}), which
is that there are at least two group means that are statistically
significantly different from each other.

option d) seems correct

In a one-way ANOVA, what does it mean to reject the statement
in the null hypothesis if three treatment groups are being
compared? Choose the correct answer below. A. Rejecting the
statement in the null hypothesis means that there is insufficient
evidence to conclude that the mean of one of the populations is
different than the other two or that all three populations are
different. B. Rejecting the statement in the null hypothesis means
that there is sufficient evidence to...

Which of the following best describes a
"dual-purpose test" as discussed in class (i.e., a test of
documents)?
a.
Functions as an analytical procedure and a financial test
b.
Functions as substantiation of a financial balance and also a
test of internal controls
c.
Substantiates an ending balance and the transactions making up
the balance
d.
Addresses two different accounts

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...

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...

If an ANOVA test indicates there is a difference among the group
means, in order to identify which specific means are statistically
different from the others, you would use: Select one:
a. T test
b. Tukey-Kramer procedure
c. F test
d. Levene test

Question 1- Choose the best option
I-When calculating an F ratio for an ANOVA test, what is
the general pattern?
a. There is no relationship between F ratio and p-value
b. F ratio equal the p-value
c. F ratio is always greater than the p-value
d. In general, the smaller the F ratio the smaller the
p-value.
e. In general, the larger the F ratio the smaller the
p-value.
II-Which of the following tools is not appropriate for
studying the...

ANOVA F test was conducted to test whether the means
of four groups are the same against at least one group mean is
different. The total number of subjects in four samples were 50.
The F ratio (test statistics) was 2.45
a) What is the p-value?
b) What is your conclusion at 5% significance level?
Are all group means the same?

You were comparing four treatments in a one-way ANOVA (or simply
ANOVA in our class) and obtained a significant test statistic. How
would you interpret the alternative hypothesis HA in words? justify
your answer
a)At least two treatments are different from each other in terms
of their effect on the mean response.
b)All of the above.
c)None of the above.
d)Exactly two of the four treatments have the same effect on the
mean response.
e)All four treatments have different effects...

Q07. An ANOVA examining three different blanching
processes to determine which is best in terms of vitamin A
retention (mg/100mg) yields an F statistic with an associated
P-value of < .001. Therefore, at α = .05 we
I. fail to reject the null hypothesis.
II. reject the null hypothesis.
III. conclude that mean vitamin A retention amounts are not all
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a) II only
b) I only
c) both II and III
d III only...

Which statement best describes the practice of price
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responsibility is to maximize shareholder wealth. C. Charging
different customers different prices for the same product allows
the firm to increase profitability by better aligning price with
customer value. D. Charging different customers different prices
for the same product allows the firm to increase...

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