Question

QUESTION 1 The number of degrees of freedom for the appropriate chi-square distribution in goodness of...

QUESTION 1

The number of degrees of freedom for the appropriate chi-square distribution in goodness of fit test is

A

n − 1

B

(r-1)(c-1)

C

a chi-square distribution is not used

D

k − 1

QUESTION 2

A goodness of fit test and test of independence is always conducted as a

A

upper-tail test

B

left-tail test

C

middle test

D

lower-tail test

QUESTION 3

The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is

A

number of rows minus 1 times number of columns minus 1

B

a chi-square distribution is not used

C

number of groups minus 1

D

sample size minus 1

QUESTION 4

In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a contingency table test must be

A

at least 5

B

at least 10

C

no more than 5

D

less than 2

QUESTION 5

The sampling distribution for a goodness of fit test is the

A

Poisson distribution

B

chi-square distribution

C

normal distribution

D

t distribution

Homework Answers

Answer #1

Q1. The degrees of freedom for chi-square goodness of fit test is:

k - 1
where k is the number of observed cells

Correct option: D) k - 1

Q2. A goodness of fit test and test of independence is always conducted as a upper tail test because more the difference between the observed and expected values, more the statistic will shift towards the right and we will reject it.

Correct option: A) upper tail test

Q3. For chi-square test of independence:

df = (r - 1) x (c - 1)

r = number of rows
c = number of columns

Correct option: A)

Q4. In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a contingency table test must be atleast 5

Correct option: A) at least 5

Q5. The sampling distribution for a goodness of fit test is the

B) Chi-square distribution

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