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GCSE Mathematics · key term
The proportion of trials in which an outcome occurs: frequency of the outcome divided by the total number of trials.
Used by AQA, Edexcel and OCR
Specification P1, P3, P5 · Paper 1, Paper 2, Paper 3
An estimate of an outcome's probability found by dividing its frequency by the total number of trials.
The number of times an event occurs divided by the number of trials carried out.
The proportion of trials in which an outcome actually occurs: its frequency divided by the total number of trials.
Specification P1, P3, P5 · Paper 1, Paper 2, Paper 3
The frequency of an event divided by the total number of trials; it estimates the event’s probability from observed results.
Revise: Frequency AnalysisA frequency describes what happened; relative frequency expresses that count as a fraction of all trials.
The proportion of trials in which an event actually occurs, calculated by dividing its observed frequency by the total number of trials.
Specification 11.01b, 11.01c · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The frequency of an outcome divided by the total number of trials; it describes the share of trials with that outcome.
Revise: Relative FrequencyRelative frequencies are particularly useful when comparing experiments with different numbers of trials: a count of 18 means more when it comes from 40 spins than when it comes from 100.
The proportion of trials in which a particular outcome occurs, found by dividing its frequency by the total number of trials.
A relative frequency is based on results already observed. Do not describe it as the exact theoretical probability unless there is a separate reason to know that probability.
A larger number of trials generally gives a more reliable estimate, but the relative frequency need not get closer to the theoretical probability after every additional trial.
Describe the pattern as a tendency: a larger unbiased sample is generally more reliable, but its relative frequency need not get closer to the theoretical probability at every step.
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