Statistics Final Exam Questions With Accurate Solutions.
What are the expected counts in a two-way table?
Choose the correct answer below.
A.
The results of a survey.
B.
The number of observations in each cell if the alternative hypothesis were
true.
C.
The numbers of observations in each cell if the null hypothesis were true.
Your answer is correct.
D.
The probability of each event in the table - accurate answers-C.
The numbers of observations in each cell if the null hypothesis were true.
What do large values of the chi-square statistic indicate?
A.
The null hypothesis cannot be rejected.
B.
The statistic was calculated incorrectly.
C.
The data conform to the null hypothesis.
D.
One should be suspicious of the null hypothesis. - accurate answers-D.
One should be suspicious of the null hypothesis.
If there is no association between the categorical variables, then which of the
following must be true?
A.
The chi-square statistic will have a large value.
B.
The chi-square statistic will have a large value and the observed counts in the
two-way table will be very different from the expected counts.
C.
The observed counts in the two-way table will be very different from the
expected counts.
D.
The observed counts in the two-way table should be close to the expected
counts. - accurate answers-D.
, The observed counts in the two-way table should be close to the expected
counts.
Which of the following is always the null hypothesis for a goodness-of-fit test?
A.
The population distribution of the variable is different from the proposed
distribution.
B.
The population distribution of the variable is the same as the proposed
distribution.
C.
The null hypothesis varies depending on the context.
D.
The means of the distributions are equal. - accurate answers-B.
The population distribution of the variable is the same as the proposed
distribution.
In order to do a goodness-of-fit hypothesis test, the expected count in each cell
must be at least - accurate answers-5
In a chi-square test for goodness of fit, which of the following is used to
compute the degrees of freedom?
Choose the correct answer below.
A.
The number of categories for the variable minus 1
B.
The number of cells in the table
C.
The number of rows times the number of columns
D.
The number of categories for the variable plus 1 - accurate answers-A.
The number of categories for the variable minus 1
What area is used to compute the p-value for a chi-square test for goodness of
fit?
A.
The area to the right or left of the test statistic, depending on the sign in the
alternative hypothesis
What are the expected counts in a two-way table?
Choose the correct answer below.
A.
The results of a survey.
B.
The number of observations in each cell if the alternative hypothesis were
true.
C.
The numbers of observations in each cell if the null hypothesis were true.
Your answer is correct.
D.
The probability of each event in the table - accurate answers-C.
The numbers of observations in each cell if the null hypothesis were true.
What do large values of the chi-square statistic indicate?
A.
The null hypothesis cannot be rejected.
B.
The statistic was calculated incorrectly.
C.
The data conform to the null hypothesis.
D.
One should be suspicious of the null hypothesis. - accurate answers-D.
One should be suspicious of the null hypothesis.
If there is no association between the categorical variables, then which of the
following must be true?
A.
The chi-square statistic will have a large value.
B.
The chi-square statistic will have a large value and the observed counts in the
two-way table will be very different from the expected counts.
C.
The observed counts in the two-way table will be very different from the
expected counts.
D.
The observed counts in the two-way table should be close to the expected
counts. - accurate answers-D.
, The observed counts in the two-way table should be close to the expected
counts.
Which of the following is always the null hypothesis for a goodness-of-fit test?
A.
The population distribution of the variable is different from the proposed
distribution.
B.
The population distribution of the variable is the same as the proposed
distribution.
C.
The null hypothesis varies depending on the context.
D.
The means of the distributions are equal. - accurate answers-B.
The population distribution of the variable is the same as the proposed
distribution.
In order to do a goodness-of-fit hypothesis test, the expected count in each cell
must be at least - accurate answers-5
In a chi-square test for goodness of fit, which of the following is used to
compute the degrees of freedom?
Choose the correct answer below.
A.
The number of categories for the variable minus 1
B.
The number of cells in the table
C.
The number of rows times the number of columns
D.
The number of categories for the variable plus 1 - accurate answers-A.
The number of categories for the variable minus 1
What area is used to compute the p-value for a chi-square test for goodness of
fit?
A.
The area to the right or left of the test statistic, depending on the sign in the
alternative hypothesis
