R Programming for Statistics and Data Science - Building a Function in R (Basics)

This video tutorial guides viewers through creating a simple card drawing function in R, inspired by a card game. It covers building a deck, using the sample function, and understanding sampling with replacement. The tutorial then progresses to creating a custom draw function to automate the process, ensuring a new hand is drawn each time. The lesson concludes with encouragement to practice and hints at more advanced topics in future lessons.

What is the main purpose of introducing the card game in the context of learning R functions?

• To teach the rules of the game

• To discuss the history of card games

• To provide a practical example for understanding functions

• To compare different board games

Which R function is used to draw cards from a deck?

• draw

• deck

• sample

• vector

What does the 'replace' argument in the sample function do?

• It increases the sample size

• It removes duplicates from the sample

• It allows for repeated sampling of the same element

• It changes the order of the deck

Why does calling the variable 'hand' multiple times return the same result?

• Because the replace argument is set to false

• Because the deck is shuffled each time

• Because 'hand' stores the initial sample result

• Because the sample function is rerun each time

What is the purpose of creating a custom function in R for drawing cards?

• To manually draw cards each time

• To store the deck permanently

• To automate the process of drawing cards

• To change the rules of the card game

What are the basic components needed to define a function in R?

• Name, body of code, and arguments

• Name, data, and variables

• Vectors, matrices, and lists

• Arguments, loops, and conditions

What happens if you call a function in R without parentheses?

• The function outputs its code

• The function returns an error

• The function returns a null value

• The function executes normally