Learning R for Data Visualization (Video 4)

This video tutorial covers the process of importing data into R, focusing on setting the working directory and using the read.table function. It explains how to specify parameters such as column separation, data structure, and handling missing values. The tutorial also demonstrates how to check the structure of the imported data to ensure it matches expectations. By the end, viewers will have successfully imported a data file into R and verified its structure.

What is the primary function used in R to import text files and CSVs?

• read.table

• read.csv

• import.data

• load.file

Which symbol is commonly used to separate columns in a CSV file?

• Comma

• Whitespace

• Semicolon

• Tab

What should you specify in R if the first row of your data represents column titles?

• row.names = FALSE

• col.names = TRUE

• sep = ','

• header = TRUE

How can you set the working directory in RStudio?

• By selecting the Tools menu

• Through the Edit menu

• By opening the File menu

• Using the setwd() function

Which function is used to check the structure of an imported dataset in R?

• summary()

• structure()

• str()

• check()