关于多母体组内差正定性的充要条件

ON THE NECESSARY AND SUFFICIENT CONDITIONS FOR POSITIVE DEFINITE OF INTERNAL DEVIATION OF GROUPS ON MULTI SAMPLES

给出了“组内差” Ｅ 正定的充要条件，推广了有关文献的结论，明确了 Ｗ ｉｌｋｓ

In this paper the necessary and sufficient conditions for positive definite of internal deviation of groups on multi samples are obtained,and a conclusion of the existence and applications of Wilks' statistic and distance discriminate function are identified.