STATISTICAL TECHNIQUES AND TOOLS
CHI SQUARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Expected counts for two samples
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Observed proportions for one categorical variable
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Observed counts for one categorical variable
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Observed proportions for two categorical variables
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Detailed explanation-1: -A chi-square goodness-of-fit test can be conducted when there is one categorical variable with more than two levels. If there are exactly two categories, then a one proportion z test may be conducted. The levels of that categorical variable must be mutually exclusive.
Detailed explanation-2: -The chi-square goodness of fit test is used to test whether the frequency distribution of a categorical variable is different from your expectations. The chi-square test of independence is used to test whether two categorical variables are related to each other.
Detailed explanation-3: -The Chi-Square Test of Independence can only compare categorical variables. It cannot make comparisons between continuous variables or between categorical and continuous variables.