5. BAD PROBLEM (test error is not similar to validation error) Test error on additional data: now imagine that you actually get new data that wasn’t available when you first fit the model. (a) Additional data can be found in the file algaeTest.txt. algae.Test <- read_table2(‘algaeTest.txt’ col_names c(‘season’,’size’, ‘speed’ , ‘mxPH’,’mn02″, ‘C1’, ‘NO3’, ‘ NH4″ , ‘ОРО4’ , P04 ‘ , ‘ Chia”, ‘al ‘ ) , na c(‘XXXxXxxx”)) This data was not used to
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