chi-square distribution
noun1
Mathematics, Sciences, Statistics A probability distribution widely used in inferential statistics.
- 1992, Harold R. Lindman, Analysis of Variance in Experimental Design, Springer, Softcover Reprint, page 7, The chi-square distribution with ν degrees of freedom is defined to be the distribution of the sum of ν independent squared random variables, each having the standard normal distribution.
- The family of chi-square distributions, like the "Student's" t distributions, has an infinite number of members, one for each number of degrees of freedom.2003, Chin Long Chiang, Statistical Methods of Analysis, World Scientific Publishing, page 204:
1 more example
- The degrees of freedom of a chi-square distribution are usually denoted by the Greek letter #92;nu and can take any positive integer value.2012, Anthony J. Hayter, Probability and Statistics for Engineers and Scientists, 4th edition, Cengage Learning, page 254:
- Synonyms
- central chi-square distribution
- Related terms
- chi-square test, chi distribution