A symbol that performs a mathematical operation, such as +, -, *, /
An expression that evaluates to TRUE or FALSE.
The kind of data represented by an object.
A piece of text inside of quotes.
A binary operator (%in%) that returns a logical vector indicating if there is a match or not for its left operand.
The process of preparing data for visualisation and statistical analysis.
Changing the data type of values in a vector to a single compatible type.
A data type representing TRUE or FALSE values.
A data type where a specific set of values are stored with labels; An explanatory variable manipulated by the experimenter
The end!