Statistics › Section D · Discrete random variables › Topic D.1
Probability distributions for discrete variables
A random variable turns the outcomes of chance into numbers, so that averages and spreads of random results become computable. This topic builds the probability distribution - the table that says what the variable can be, and how likely each value is.
In this topic
- Outcomes become numbers
- Random variables: discrete and continuous
- The probability distribution
- Building a distribution from an experiment
- Reading probabilities from a distribution
- Worked example: is this a distribution?
- Worked example: sixes in two rolls
- The distribution as a picture
- Common mistakes to avoid
- Key takeaways
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