Update page 'Solutions to the questions concerning R language'

2023-05-22 20:44:17 +02:00
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 ***Applied Question***
 **i.**
 ```
 library(ISLR)
 set.seed(9004)
 train = sample(dim(OJ)[1], 800)
 OJ.train = OJ[train, ]
 OJ.test = OJ[-train, ]
 ```