Question

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

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