The chi-square test of a contingency table is based upon:
a. two qualitative variables
b. two quantitative variables
c. three or more qualitative variables
d. three or more quantitative variables
e. all of these
Q. 2Contingency tables are used in:
a. testing independence of two samples
b. testing dependence in matched pairs
c. testing independence of two populations
d. describing a single population
e. testing independence of two quantitative variables in a population
Q. 3Which statistical technique is appropriate when we wish to analyze the relationship between two qualitative variables with two or more categories?
a. The chi-square test of a multinomial experiment.
b. The chi-square test of a contingency table.
c. The t-test of the difference between two means.
d. The z test of the difference between two proportions.
e. None of these.
Q. 4A chi-square test of a contingency table with 4 rows and 5 columns shows that the value of the test statistic is 22.18 . The most accurate statement that can be made about the p-value for this test is that:
a. p-value is greater than 0.05
b. p-value is smaller than 0.025
c. p-value is greater than 0.025 but smaller than 0.05
d. p-value is greater than 0.10
e. Not enough information is given to determine the p- value.
Q. 5The number of degrees of freedom for a contingency table with 6 rows and 6 columns is:
a. 36
b. 25
c. 12
d. 6
e. 0
Q. 6The president of a state university collected data from students concerning building a new library, and classified the responses into different categories (strongly agree, agree, undecided, disagree, strongly disagree) and according to whether the student was male or female. To determine whether the data provide sufficient evidence to indicate that the responses depend upon gender, the most appropriate test is:
a. chi-square goodness-of-fit test
b. chi-square test of a contingency table (test of independence)
c. chi-square test of normality
d. none of these
e. all of these
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