Goodness of Fit Test: A Goodness of Fit Test is a statistical test used to determine how well an observed sample data fits an expected theoretical distribution. It assesses whether any differences between observed and expected frequencies are statistically significant or simply due to random chance.
Independence Test: An Independence Test is a statistical test used to determine if there is an association or relationship between two categorical variables. It assesses whether the occurrence of one variable is independent of (not influenced by) the occurrence of another variable.
Degrees of Freedom: In statistics, degrees of freedom represent the number of values in a calculation that are free to vary. It plays a crucial role in determining critical values for hypothesis testing using Chi-Squared tests.