A grouped expression is a collection of R commands or expressions enclosed in curly brackets {}. R regards a grouped expression as a single expression with a single value, although when such an expression is executed all constituent expressions are evaluated individually as well. In this video we introduce grouped expressions, explain how they work, and briefly describe their utility in R programming. The video includes several examples.

Grouped expressions are important components of functions, if else statements, and loops. Understanding them is fundamentally important for learning R programming. Therefore this video is essential content.