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