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Perfect Fit
A situation where a model, equation, or line precisely describes or predicts the observed data without any errors.
Chi-square Test
A statistical test used to determine if there is a significant difference between observed and expected frequencies in one or more categories.
Nominal Variables
Variables that represent categories with no inherent order or ranking among them.
Chi-square Test of Independence
A statistical test used to determine if there is a significant association between two categorical variables.
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