STATISTICAL TECHNIQUES AND TOOLS
CHI SQUARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The values of the expected should be ____ or more in at least 80% of the cells, and no cell should have an expected of less than one ____
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80%, 20%
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1, 5
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5, 1
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20%, 5
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Explanation:
Detailed explanation-1: -The value of the cell expecteds should be 5 or more in at least 80% of the cells, and no cell should have an expected of less than one (3). This assumption is most likely to be met if the sample size equals at least the number of cells multiplied by 5.
Detailed explanation-2: -All cells have expected counts of at least 1, and 50% or fewer of the cells have expected counts of less than 5.
Detailed explanation-3: -You can safely use the chi-square test with critical values from the chi-square distribution when no more than 20% of the expected counts are less than 5 and all individual expected counts are 1 or greater. In particular, all four expected counts in a 2 × 2 table should be 5 or greater.
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