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- 注册时间
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Hi, Kenny:
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when we use HLM,there are some paper just report the fixed effect,while most time I use the random effect,so my question is when shall we use fixed or random effect and their difference?2 Y% Y1 L" y1 E0 Z+ A1 L
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another question is about the ground mean and the group mean, when we test the level 2 model, should we use group mean?can you give some guidance?8 X) K$ S7 H" K6 g3 `% h5 M
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Best,
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