Podcast
Questions and Answers
What is the main difference between read.csv() and read_csv() functions?
What is the main difference between read.csv() and read_csv() functions?
- read.csv() creates a data frame and read_csv() creates a tibble (correct)
- read.csv() is only for CSV files and read_csv() is for other file types
- read.csv() creates a tibble and read_csv() creates a data frame
- read.csv() is faster and read_csv() is slower
What is the purpose of the 'col_names' argument in the read_csv() function?
What is the purpose of the 'col_names' argument in the read_csv() function?
- To specify whether the first column contains variable names (correct)
- To specify the number of rows to read
- To specify the path and name of the file to be imported
- To specify the data type of each column
What is the default behavior of the read_csv() function when it comes to determining the data type of each column?
What is the default behavior of the read_csv() function when it comes to determining the data type of each column?
- It guesses the data type based on the first 1000 rows (correct)
- It asks the user to specify the data type
- It guesses the data type based on the first 100 rows
- It always assumes the data type is character
What is the purpose of the 'n_max' parameter when reading a CSV file?
What is the purpose of the 'n_max' parameter when reading a CSV file?
What is the purpose of the 'na' argument in the read_csv() function?
What is the purpose of the 'na' argument in the read_csv() function?
Which function is used to read fixed-width files?
Which function is used to read fixed-width files?
What is the purpose of the 'comment' argument in the read_csv() function?
What is the purpose of the 'comment' argument in the read_csv() function?
What is the purpose of the 'parse_number()' function?
What is the purpose of the 'parse_number()' function?
What is the advantage of using the read_csv() function over the read.csv() function?
What is the advantage of using the read_csv() function over the read.csv() function?
What format does the 'parse_datetime()' function expect for date-time values?
What format does the 'parse_datetime()' function expect for date-time values?
What is the default type of column when reading a CSV file with string values?
What is the default type of column when reading a CSV file with string values?
What is the purpose of the 'parse_factor()' function?
What is the purpose of the 'parse_factor()' function?
What is the primary function of the readxl package?
What is the primary function of the readxl package?
What is the main characteristic of a tidy data?
What is the main characteristic of a tidy data?
What is the purpose of the gather() function in the tidyr package?
What is the purpose of the gather() function in the tidyr package?
What is the default data type for gathered names in the gather() function?
What is the default data type for gathered names in the gather() function?
What is the purpose of the haven package?
What is the purpose of the haven package?
What is the term for the process of rearranging data into a consistent and useful format?
What is the term for the process of rearranging data into a consistent and useful format?