Examlex
The curly bracket { } notation used in extended Backus-Naur form stands for "at least one or more repetitions of."
Chi-Squared Test Statistic
A statistical measure used to determine the goodness of fit between observed values and values expected theoretically.
Level of Significance
Another term for significance level, indicating the threshold below which the null hypothesis is rejected in statistical tests.
Degrees of Freedom
refers to the number of independent values in a statistical calculation that can vary without violating any given constraints.
Test Statistics
Test statistics are calculated from sample data and used in hypothesis testing to determine whether to reject the null hypothesis.
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