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- 注册时间
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Hi, Kenny:: d8 C4 q1 u$ w; j8 h
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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?9 ~2 C2 q' A9 ~/ M4 c ]) F. S
9 |* ~) h6 b2 @! J" {9 Ganother 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?
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Best,* L9 t V: V8 O% D Z6 \0 ^ P
Kelly+ t8 P; }8 M4 l: Y, N) q
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