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Statistical Computing with R (2nd Edition).pdf #8

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englianhu opened this issue Oct 19, 2020 · 7 comments
Open

Statistical Computing with R (2nd Edition).pdf #8

englianhu opened this issue Oct 19, 2020 · 7 comments
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enhancement New feature or request

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@englianhu
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[问答]求Statistical Computing with R 客课后答案

Pdf电子书:https://englianhu.files.wordpress.com/2020/10/statistical-computer-with-r-2nd-edition.pdf

@englianhu
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@englianhu
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#9 (comment) here i tried to build random effects while noticed doesn't enhance my model.

#degree = 2
mm000 = lm(Profit ~ Date * 
              poly(Bettor, degree = 2, raw = FALSE) * 
              poly(Won, degree = 2, raw = FALSE) * 
              poly(Cancelled, degree = 2, raw = FALSE) * 
              poly(Rebates, degree = 2, raw = FALSE) * 
              (1 + Won * Cancelled | Bettor) * (Type / Date), smp2) %>% 
    extractAIC

mm001 = lm(Profit ~ Date * 
               poly(Bettor, degree = 2, raw = FALSE) * 
               poly(Won, degree = 2, raw = FALSE) * 
               poly(Cancelled, degree = 2, raw = FALSE) * 
               poly(Rebates, degree = 2, raw = FALSE) * 
               (1 + Won * Cancelled / Bettor) * (Type / Date), smp2) %>% 
    extractAIC
#degree = 3
mm002 = lm(Profit ~ Date * 
              poly(Bettor, degree = 3, raw = FALSE) * 
              poly(Won, degree = 3, raw = FALSE) * 
              poly(Cancelled, degree = 3, raw = FALSE) * 
              poly(Rebates, degree = 3, raw = FALSE) * 
              (1 + Won * Cancelled | Bettor) * (Type / Date), smp2) %>% 
    extractAIC

mm003 = lm(Profit ~ Date * 
               poly(Bettor, degree = 3, raw = FALSE) * 
               poly(Won, degree = 3, raw = FALSE) * 
               poly(Cancelled, degree = 3, raw = FALSE) * 
               poly(Rebates, degree = 3, raw = FALSE) * 
               (1 + Won * Cancelled / Bettor) * (Type / Date), smp2) %>% 
    extractAIC

@englianhu
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englianhu commented Nov 7, 2020

Explanation on random effects & nested lm via randomeffs2.pdf
lm - random effects & nested model.jpg

@englianhu
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@englianhu
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@englianhu
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