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A measurement result is considered accurate if it is judged to be close to the true value.Accuracy is how close to the true value a reading is;precision is a measure of reproducibility – how close together your results are – how much random variation they have; resolution is the smallest change detectable with your equipment . Be careful not to confuse accuracy, precision and resolution.
Once you’ve watched this video take another look a the diagram on the glossary – it should start to make a lot more sense.
A LOT more technical than the video above but the information could be useful for longer and more difficult questions regarding practical results. Just ignore the reference to OCR GCSE – the content of this video is is appropriate for all science GCSE’s or A levels

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AQA GCSE Biology 4.1.1.(1-2) Cytology

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