Mathematics A-Level
Sample mean distribution
What Sample mean distribution means in Mathematics A-Level, as defined for AQA.
Definition of Sample mean distribution
Check what you remember
Read the wording for your board, then hide it and explain Sample mean distribution in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Under the null hypothesis, the sample mean of n independent observations follows a Normal distribution with mean μ0 and variance σ²/n.
Topics that use Sample mean distribution
- O: Statistical hypothesis testing (AQA A-Level)
Related terms
- Binomial distribution
- binomial hypothesis testing
- Correlation interpretation
- critical region
- Hypothesis testing
- Normal hypothesis testing
- Null hypothesis (H₀)
- One-tailed and two-tailed tests
Using Sample mean distribution in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Mathematics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge