Video Summary

Data types are used to define the kind of data that can be stored in a variable. The most common data types are integers, floating-point numbers, strings, and booleans. Integers store whole numbers, floating-point numbers store numbers with decimals, strings store text, and booleans store values of true or false. It is important to use the correct data type for a variable, as using the wrong data type can cause errors. For example, storing a text value in an integer variable will cause the text value to be truncated.