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Exam board: GCSE · AQA, change

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Mean without anomalies

Spot the anomalous repeat, leave it out and get the mean to the right number of decimal places.

Separate them with commas, spaces or new lines. Type them exactly as you recorded them, trailing zeros included.

Worked example

Three repeat titres: 23.4, 23.6, 27.9 (cm³). The third is far from the other two, so it is anomalous. Leave it out: (23.4 + 23.6) ÷ 2 = 23.5 cm³.

Say in your write-up which value you left out and why. If you can, repeat the reading instead of just leaving it out.

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