Question

A
**c****hi-square** **goodness of
fit test** determines whether a set of observed frequencies
differs from a set of ______ frequencies.

Select one:

a. independent.

b. obtained.

c. expected.

d. constant.

Answer #1

Solution:

The chisquare goodness of fit test is to determine whether observed frequencies differ significantly from the expected frequencies specified in the null hypothesis.

The chisquare goodness of fit test is used to find out the observed value of a given phenomenon different from the expected value. In chisquare goodness of fit test terms goodness of fit is used to compared the observed sample distribution. Chisquare goodness of fit test determine how well theoretical distribution such as Binomial , Normal or Poisson fits the emperical distribution.

A chisquare goodness of fit test determines whether set of observed frequencies differs from a set of expected frequencies.

Option C is correct

The
chi-square goodness-of-fit test is used to determine whether
observed frequencies significantly deviate from expected
frequencies. In most instances, the researcher hopes to find a
significant result (indicating that the observations deviate from
expectations), which would provide some evidence for a treatment
effect.
• Share an example of a situation in which the researcher
might hope for a non-significant result. Be sure to state why they
would hope for such a result.
(Type Answer & Explain your example)

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...

*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 =...

What is evaluated by the chi-square test for goodness of
fit?
a. If proportions of a sample distribution match those of a
population specified by the null hypothesis
b. If the frequencies found within an individual category match
a certain shape
c. Whether the means of two or more categories differ from one
another
d. Whether two variables are related to each other or
independent

In performing a chi-square goodness-of-fit test with multinomial
probabilities, the ___________ the difference between observed and
expected frequencies, the higher the probability of concluding that
the probabilities specified in the null hypothesis are correct.
larger
smaller

You are conducting a multinomial Chi-Square Goodness of Fit
hypothesis test for the claim that the 4 categories occur with the
following frequencies:
HoHo : pA=0.1; pB=0.5; pC=0.1; pD=0.3
Complete the table. Report all answers accurate to three decimal
places.
Category
Observed
Frequency
Expected
Frequency
A
17
B
25
C
6
D
16
What is the chi-square test-statistic for this data?
χ2=
What is the P-Value?
P-Value =

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?

in performing a chi-square goodness of fit test for a
normal distribution, a researcher wants to make sure that all of
the expected cell frequencies are at least five. the sample is
divided into 7 intervals. thw seco d through the sixth intervals
all have expected cell frequencies of at least five. the first and
the last interval have expected cell frequencies of 1.5 each. after
adjusting the number of intervals, the freedom for the chi-square
statistic is

A chi-square test for goodness of fit is used to examine the
distribution of individuals across four categories, and a
chi-square test for independence is used to examine the
distribution of individuals across the six categories in a 2×3
matrix of categories. Which test has the larger value for df?
a. The test for goodness of fit
b. Both tests have the same df value.
c. The test for independence
d. The df value depends on the sizes of...

what are one of the main characteristics of chi Square
analysis Goodness-to-fit test? What type of research instrument
would be a great fit for Chi Square analysis Goodness-to-fit
test?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 24 minutes ago

asked 26 minutes ago

asked 26 minutes ago

asked 35 minutes ago

asked 35 minutes ago

asked 40 minutes ago

asked 42 minutes ago

asked 43 minutes ago

asked 43 minutes ago

asked 45 minutes ago

asked 1 hour ago