Question

create an assignment about :

Chi-Square Independence test

Answer #1

create an example to which the chi-square test of independence
could be applied. Address the following:
Identify two categorical variables for which a chi-square test
of independence could be conducted.
Describe the categories of each.
Explain why these would be appropriate for this test.
Predict whether or not the chi-square test result would be
significant, and what this would imply about the variables.

For each of the following examples, state whether the chi-square
goodness-of-fit test or the chi-square test for independence is
appropriate, and state the degrees of freedom (df) for the
test.
Part (a)
A student tests whether the professor's speaking style (monotone,
dynamic) and student interest (low, average, high) are
independent.
State whether the chi-square goodness-of-fit test or the chi-square
test for independence is appropriate.
chi-square goodness-of-fitchi-square test for
independence
State the degrees of freedom for the test.
df =
Part...

Problem Set 5.4: Alternative to Chi-Square as a Test of
Independence
Criterion: Identify an alternative to
chi-square as a test of independence.
Data: A chi-square test of independence could
be used to examine the relationship between overhead light
preference (on or off) and glasses use (wearing or not
wearing).
Instruction: Answer this: What other type of
test could be used to measure this data? Explain. (hint: the answer
is NOT fishers exact test)

Explain how the chi-square test of independence can be used to
test the difference of two proportions.

*4.) For each of the following examples, state whether the
chi-square goodness-of-fit test or the chi-square test for
independence is appropriate, and state the degrees of freedom
(df) for the test.
Part (a)
An instructor tests whether class attendance (low, average, high)
and grade point average (low, average, high) are independent.
State whether the chi-square goodness-of-fit test or the chi-square
test for independence is appropriate.
chi-square goodness-of-fitchi-square test for
independence
State the degrees of freedom for the test.
df =...

The same formula is used to calculate the chi-square statistic
in the chi-square test for goodness-of-fit and the chi-square test
of independence. Which calculation differs along the way for these
two tests?

Chi-Square Test for Independence
Using Chi-Square, we are looking to see if there is a
significant difference between what we would expect results to be,
and what the actual results were. That is, expected vs.
observed. Use alpha = .05
Listed below are data from a survey conducted recently where
Males and Females responded to their happiness with their
supervisor (this is fictitious data).
Response
Male
Female
Total
Not at all
23
25
48
Somewhat
13
22
35
Very
26...

The number of degrees of freedom associated with a chi-square
test for independence based upon a contingency table with 4 rows
and 3 columns is _____.
6
5
12
7

In a Chi-Square Independence test the test statistic is 1.88 and
the critical value is 3.84. Which of the following can we
conclude?
Reject H0 and conclude that the variables are related
Reject HO and conclude that the variables are not related
Not reject H0 and conclude that the variables are related
Not reject H0 and conclude that the variables are not
related

If the p-value for a Chi-square test for independence is 0.004,
the corresponding one-sided (or directional) p-value is always half
of 0.004.
True or False

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