SAS 的问题？# DataSciences - 数据科学
k*r
1 楼
请问在分析数据时，LSD test 和 Duncan 的区别？我用的是SAS。我用同样的数据发现
duncan的significant groups比LSD的要少，而且适合用于多个trt的实验。
我wiki上看到：
Duncan's MRT is especially protective against false negative (Type II) error
at the expense of having a greater risk of making false positive (Type I)
errors. Duncan's test is commonly used in agronomy and other agricultural
research.
TypeI错误应该使groups变多，TypeII错误使groups变少，Duncan‘s test减少typeII
错误，但为什么运行同样数据的时候，groups变少了。没想明白是怎么回事？
duncan的significant groups比LSD的要少，而且适合用于多个trt的实验。
我wiki上看到：
Duncan's MRT is especially protective against false negative (Type II) error
at the expense of having a greater risk of making false positive (Type I)
errors. Duncan's test is commonly used in agronomy and other agricultural
research.
TypeI错误应该使groups变多，TypeII错误使groups变少，Duncan‘s test减少typeII
错误，但为什么运行同样数据的时候，groups变少了。没想明白是怎么回事？