Lixiaoxu
Membre des de 6 jul 2009
→z and noncentral distributions (\chi^2,t, and F)
| Línia 332: | Línia 332: | ||
</R> | </R> | ||
== | ==''z'' and noncentral distributions (chi-square, t, and F)== | ||
===Noncentral | ===Noncentral chi-square=== | ||
Let <math>Z_i</math>,''i''=0,1,2,... denote a series of independent random variables of standard normal distribution. | Let <math>Z_i</math>,''i''=0,1,2,... denote a series of independent random variables of standard normal distribution. | ||
:<math>V = \sum_{i=1}^{df}{Z_i}^2</math> | :<math>V = \sum_{i=1}^{df}{Z_i}^2</math> | ||