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Formulas: data and chance, grade 6

Relative frequency and the mean

  • The relative frequency of an answer – f\displaystyle f its frequency, n\displaystyle n the number of all the data
    fn\displaystyle \frac{f}{n}
  • The mean – S\displaystyle S the sum of all the data, n\displaystyle n the number of data
    Sn\displaystyle \frac{S}{n}

Chance

  • The chance of an event, when all the outcomes are equally likely – k\displaystyle k the outcomes in which it happens, n\displaystyle n all the outcomes
    kn\displaystyle \frac{k}{n}