STATISTICAL TECHNIQUES AND TOOLS
CHI SQUARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chi-square Goodness of Fit Test
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Chi-Square Test for Homogeneity
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Chi-Square Test for Independence/Association
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Not a Chi-square test
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Detailed explanation-1: -This test determines if two or more populations (or subgroups of a population) have the same distribution of a single categorical variable. The test of homogeneity expands the test for a difference in two population proportions, which is the two-proportion Z-test we learned in Inference for Two Proportions.
Detailed explanation-2: -The chi-square test of homogeneity tests whether the different groups are homogeneous, which means that they have the same distribution of the categorical variable. In contrast, the chi-square test of independence checks whether the two categorical variables are independent.
Detailed explanation-3: -The chi-square test is a hypothesis test designed to test for a statistically significant relationship between nominal and ordinal variables organized in a bivariate table. In other words, it tells us whether two variables are independent of one another.