Preprocessing

Cut and paste your R commands to preprocess the data from the worksheet exercise:

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You can find a model answer in the worksheet source code

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AUTO MARKING: Accept any entry that meets all of the following conditions:

(a) More than 2 lines

(b) Less than 30 lines

(c) Contains ALL of the following strings:

• do

• list.files

• read_csv

• bind_rows

• colnames

• filter

• group_by

• summarise

• select

When throwing an error, give an error message (e.g. “no group_by”)