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2011 Dec 08
2
Help with study guide for R exam
...meric columns of mydata described in question #1. 4. What type of data structure is produced by the R command in question #1? 5. What type of data structure is returned by the which statement in the following R command? myresult <- mydata[which(mydata[,1]> 6. Be able to fully describe the characteristcs and advantages of the following data structures: vector, dataframe, matrix, list 7. Be able to describe the following data types: character, numeric, logical, date, factor 8. Describe several advantages and disadvantages to the R open-source development process (ie. of the R system development)...