e****0
发帖数: 678 | 1 The National Resident Matching Program has the following definitions:
Categorical programs begin in the PGY-1 year and provide the training
required for board certification in medical specialties.
Preliminary or one-year programs beginin the PGY-1 year and provide
prerequisite training for advanced programs.
http://ziauddin.lefora.com/2011/03/04/preliminary-vs-categorica |
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s****u
发帖数: 1200 | 2 有八个categorical variable as independent variable. Response variable is
continuous. 这八个不能都放进去，要选几个最相关的扔进去。
现在是做了proc glm，把每个x 和y分别回归一次，这八个单独放都显著。这种情况下
该根据什么标准再进一步筛选呢？ 谢谢！
★ 发自iPhone App: ChineseWeb 7.8 |
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s****u
发帖数: 1200 | 5 谢谢各位好人帮助。好人一生平安
★ 发自iPhone App: ChineseWeb 7.8 |
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c***z
发帖数: 6348 | 7 http://en.wikipedia.org/wiki/Data_cleansing
A incomplete list of things to do:
switch data format (e.g. numeric to categorica, or from wide to long)
deal with missing value
deal with truncated data
deal with multicollinearity
explore relationship
etc |
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