Read your relevant specification here to know what you have to learn. We currently have the following maths notes on A-Level Maths Statistics 4 (S4). (These notes are in alphabetical order to make it easier to find the specific one)

- Constructing Confidence Intervals for the Difference of Two Means From Two Normal Populations
- Hypothesis Testing for the Equality of the Means of Two Populations if the Common Variance is Not known
- Power Function of a Test
- Summary of Moment Generating Functions
- An Example of Bias
- Bias
- Confidence Interval For The Mean of a Normal Distribution When the Standard Deviation is Not Given
- Confidence Interval for the Variance of a Normal Distribution
- Consistent Estimators
- Degrees of Freedom
- Factors Affecting the Power of a Hypothesis Test
- Hypothesis Testing for the Difference of Two Means From Two Normal Populations
- Hypothesis Testing for the Variance or Standard Deviation
- Pooled Standard Deviation
- Proof That the Pooled Standard Deviation is an Unbiased Estimator For the Standard Deviation if The Population Variances are Equal
- The Difference Between the Correlation Coefficient and Spearman’s Rank Correlation Coefficient
- The Exponential Distribution
- The Geometric Distribution
- The Mann Whitney U Test
- The Paired t Test
- The Two Sample t – Test
- Using the F – Distribution to Test for the Equality of the Variances of Two Normal Populations

If you believe that there are any mistakes with the notes or that there are notes missing, then please contact us here. We advise you to use the search bar for our website on the right to find any notes that you think are missing from this section as those particular notes might be somewhere else on this website. These notes are for all A-Level specifications but we have found it difficult to accommodate each specification for each module so contact us if you have a solution or if there are notes missing for a specification that you think should be here. We are trying to make this a maths website for all. Any help or feedback will be appreciated.