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If you are trying to ask "what does precision in science mean" then I can begin to answer your question.

Precision in measurement is a way of deciding how accurate a measurement is.

If I were to measure my height with a ruler stick and a pencil against a wall I would expect the measurement to be accurate to a few millimetres. This is usually expressed in scientific terms as "plus or minus" so many millimetres.

It is considered unscientific and unfair to describe measurements you may make in scientific work to a greater precision than you can actually make.

I am about 5.9 metres (+- 1 cm) but it would be inaccurate and unscientific to say that I was 5.9354 metres tall.

JCF

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12y ago

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