# Science:MATH105 Probability/Lesson 1 DRV

## What This Lesson Covers

In Lesson 1 we introduce

- random variables
- the probability density function (PDF)
- the cumulative distribution function (CDF)
- the expected value, variance and standard deviation of a discrete random variable

Simply reading the content in this lesson will not be sufficient: students will need to complete a sufficient number of Exercises and WeBWorK problems in order to prepare themselves for the final exam.