Yes. Please refer to the Mathematical Requirements section of the specification ‘M1.9 Select and use a statistical test’.

These are all specified subject content by the DfE and almost all of them are required for both **AS Level and A Level students**. This applies to both OCR A and B specifications as well as Biology AS and A Levels from all the other awarding bodies.

(The only ‘A Level only’ skills are M0.5, M2.5 and M3.4. These do not appear at all in the AS specifications and appear in **bold** in the A Level specifications).

AS and A Level students must be able to select and use:

- Chi squared test (χ
^{2}) - Unpaired
*t*-test / student’s*t*-test - Paired
*t*-test - Spearman’s rank correlation

Students do **not** need to memorise the formulae.

The Mathematical Skills handbook and Mathematical skills statistics booklet (available from the qualification webpages) explains these tests with examples. There is also a section on statistical tests in the Maths for Biology online resource.

There is also a flowchart to help students choose the most appropriate test to use for a given dataset. Note that this flowchart will not be provided in the written exams.

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