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Which of the following is NOT an enumerated power of Congress?
Categorical Variables
Variables that represent types or categories, grouping observations into distinct sets based on a characteristic such as gender or ethnicity.
Categorical Variable
A type of variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation into a particular group or nominal category.
Indicator Variables
Variables used in statistical models to represent categorical data with two possible values, typically 0 or 1, indicating absence or presence of a characteristic.
Regression Model
A statistical method used to model and analyze the relationships among variables and often used to predict values of a dependent variable based on values of independent variables.
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