Examlex
What variables are empirically linked to African American youth substance abuse?
Degrees of Freedom
The number of independent values or quantities which can be assigned to a statistical distribution, typically defined as the sample size minus the number of parameters estimated.
Contingency Table
A table often used in statistics to display the frequency distribution of variables, showing the number of observations for each combination of categories.
Qualitative Variables
Variables that express categorical data and can be described or classified by qualities rather than numerical measures.
Contingency-table Test
A statistical test used to determine whether there is a significant association between two categorical variables.
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