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

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