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take reading 4 to 5 times, and take its average

this will reduce error

Q: How do you reduce error in measurement?

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Measurement error: obviously!

yes, it is. The smaller the measurement, the higher the percentage error.

A good way to reduce error or increase measurement accuracy is to take several measurements and compute their average. In other words, you achieve accuracy through averaging. (This also validates the repeatability of the measurement.)

Calibration error and measurement error. Also, if the measurements are of different objects there may be random error.

The larger the sample, the lower the % error.. so to reduce a % error, increase your sample size.

Related questions

take repeated measurement

Yes. There is no system of measurement that is "perfect" in every way. We work hard to reduce error or uncertainty when we measure stuff, but we cannot eliminate it.

Measurement error: obviously!

yes, it is. The smaller the measurement, the higher the percentage error.

A good way to reduce error or increase measurement accuracy is to take several measurements and compute their average. In other words, you achieve accuracy through averaging. (This also validates the repeatability of the measurement.)

Calibration error and measurement error. Also, if the measurements are of different objects there may be random error.

The larger the sample, the lower the % error.. so to reduce a % error, increase your sample size.

A error in measurement is when the measurement taken is not actually correct. For instance, you measure a gap as 49 centimetres wide. You cut the plank of wood to fit that measurement. Then discover the wood you have just cut is too wide to neatly fit the gap. There has been an error in the measurement you have taken.

Systematic error is the result of complete equilibrium. The method to reduce systematic error is to introduce a proof that demonstrates the group has error in their consensus.

Divide the calculated or estimated error by the magnitude of the measurement. Take the absolute value of the result, that is, if it is negative, convert to positive. This would make the percent error = | error / measurement |.

how to reduce the problem of random error and systematic error while doing an experiment

The more precise your instruments of measurement are, the less percentage of error you will have.