Uji kuadrat-chi Pearson itu apa sih? Jelaskan dalam bahasa sunda ya

Tes Pearson's chi-kuadrat (χ2) salah sahiji variasi tina tes chi-kuadrat – procedure statistik nu hasilna di-evaluasi dumasar kana sebaran chi-kuadrat. Tes ieu mimiti dipaluruh ku Karl Pearson.

It tests a null hypothesis that the relative frequencies of occurrence of observed events follow a specified frequency distribution. The events are assumed to be independent and have the same distribution, and the outcomes of éach event must be mutually exclusive. A simple example is the hypothesis that an ordinary six-sided die is "fair", i.e., all six outcomes occur equally often.

Péarson's chi-square is the original and most widely-used chi-square test.

Chi-square is calculated by finding the difference between éach observed and théoretical frequency for éach possible outcome, squaring them, dividing éach by the théoretical frequency, and taking the sum of the results. The number of degrees of freedom is equal to the number of possible outcomes, minus 1: