Note: The translation for this entry is currently under quality review. Some content is temporarily displayed in English only.
chi square distribution
This term is a technical statistical expression used primarily in academic, scientific, and data analysis contexts. It describes a specific mathematical model used to test how well observed data fits an expected distribution or to determine if two categorical variables are independent.
Because it refers to a specific mathematical concept, it is treated as a singular entity in technical writing. It is almost never used in casual conversation and is strictly confined to the register of statistics and probability theory.
Ý nghĩa
A continuous probability distribution that arises from the sum of the squares of k independent standard normal random variables, commonly used in hypothesis testing for goodness of fit and independence in contingency tables.
The researcher used a chi square distribution to determine if the observed frequencies differed significantly from the expected values.