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Revision Pack Test Series

AA HL / Probability

Probability

Combined events, conditional probability, and a tree or a table.

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Unit formula summary

Binomial mean and variance

\(E(X)=np,\quad \mathrm{Var}(X)=np(1-p)\)
Binomial probability

\(P(X=r)=\binom{n}{r}p^r(1-p)^{n-r}\)
Mean of a data set

\(\bar{x} = \frac{\sum x}{n}\)
Standardised value

\(z = \frac{x-\mu}{\sigma}\)

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AA HL Mathematics: Analysis and Approaches AA SL Mathematics: Analysis and Approaches AI HL · Coming soon Mathematics: Applications and Interpretation AI SL · Coming soon Mathematics: Applications and Interpretation

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