A random variable is continuous if the values can be expressed as an interval. Calculations are for continuous variables, for example heights or times, that is, something that can be measured rather than counted. In order to calculate probabilities, we need to find the area under graphs, so it is important that you are confident with integration techniques before working through this page. In the exam, questions are usually the long part B questions. Typical questions are given in the exam-style questions below.
On this page, you should learn about
- continuous random variables and their probability density functions
- mode of continuous random variables
- median of continuous random variables
- mean of continuous random variables
- variance of continuous random variables
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Here is a quiz that gets you to check the initial conditions for continuous random variables
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Here is a quiz about finding the mean, mode and median from a continuous random variable
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How much of Continuous Random Variables have you understood?