The Wilcoxon Rank Sum Test is a nonparametric test that can be used to compare two independent samples when the assumptions for a t-test are invalid.
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Q. 2The Wilcoxon rank sum test is a nonparametric test that measures the degree of association between two variables for which only rank-order data are available.
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Q. 3To be valid, the chi-square test requires that all expected frequencies equal:
a. 30 or more
b. 30 or less
c. 30 precisely
d. both 30 or more and 30 or less
e. none of these
Q. 4The chi-square technique has numerous applications, including:
a. testing the alleged independence of two qualitative variables
b. making inferences about the relative sizes of more than two population proportions
c. conducting a goodness-of-fit-test to determine whether data are consistent with data drawn from a particular probability distribution
d. all of these
e. none of these
Q. 5The total degrees of freedom for an r x c (fixed-column) contingency table are rc + 1.
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Q. 6If there are more than two row categories in a contingency table with fixed c column totals, then the test of independence is equivalent to a test of the equality of c sets of multinomial proportions.
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