What argument would you have to change to read

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Problem:1 Provide an example (R code) for following:

A) create an csv file with 50 row and 5,000 column with some 1)duplicate rows 2) null values.

B) What is the default parameter for 'header' and how we can assign 1st row as header?

C) What argument would you have to change to read a file that was delimited by semicolons(;) rather than commas?

D) What argument would you have to change to read file in which numbers used commas for decimal separtion?

E) What argument would you have to change to read:

         a. only the first 1,000 rows,

         b. 20 to 30 row and 342 to 2433 columns

         c. Find the duplicated rows and store in a tab delimit file

         d. Replace nul values to the mean of column and save data as .rds

         e. Provide only complete date without duplicate rows

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