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Q: What determine the precision of a calculated result based on measurements?

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The precision of a calculated answer is limited by the least precise measurements used in the calculation.

The precision of a calculated answer is limited by the least precise measurements used in the calculation.

the precision of the least precise measuement

the precision of the least precise measuement

the precision of the least precise measuement

the precision of the least precise measuement

Forget about "significant figures"; those are used to determine the precision when you multiply or divide. When adding numbers, the rule is that the result should be rounded according to the precision of the least accurate of the addents. In this case, to one decimal digit.

precision

Precision

Normally you would just estimate by eye. Perhaps just stick the tip of the teaspoon into whatever it is that you want in the amount of a quarter of a teaspoon. Bear in mind that cooking measurements do not require the same degree of precision that you would need to conduct a scientific experiment. If you require more precision, you could take a full teaspoon, weigh it, and then divide that result by 4, to determine the weight of a quarter of a teaspoon.

No. However repeated measurements can be averaged or otherwise be used to arrive at a more accurate result.

Accuracy is whether or not the average of all of the trials in a specific experiment is equal to the intended amount--it may have been given to you or you may have to do some calculations to determine the correct amount. Accuracy is important in an experiment so one can come up with the correct answer. One one to deter from having accurate measurements is having random or systematic errors (random=fault on experimenter's behalf, systematic=error in calibration of an istrument). Precision, on the other hand, entails the reproducibility of an experiment. This just means that all trial results were fairly close to each other. This does not necessarily mean the experiment was accurate, however, as precise measurements can be all close to each other but far away from the intended result. This could be the result of a systematic error. Accuracy and precision are both important to have in an experiment as it ensures both a correct result and reproducibility.

The precision of any measurement comes from the equipment being used, instruments that can measure in smaller increments are more precise, as they can measure closer to the true value. For example if you used a ruler to measure the thickness of a wire, you may get a result of 2mm, but if you measure the same wire with a micrometer you may get a result of 1.8mm - the micrometer can measure in smaller increments, so the result is more precise.

Accuracy is the closeness of the result to the true value while precision is the repeatability of the result.

precision and accuracy are defined terms in science.Accuracy is the closeness of a given result to the true value of a measurement. Precision of a result is represented by the scatter of a number of measurements.True value is the average of a number of careful measurements by different experimenters, using different measuring systems. (consider the height of a mountain for example.)Resolution is merely the number of digits in the answer, and of which several may be meaningless.

There is a considerable difference as to the meanings of and the difference between the terms accuracy and precision. In scientific investigation, they are assigned distinctly different meanings which must be quite separate. The accuracy of an experiment is a measure of how close the result of the experiment comes to the true value. Therefore, it is a measure of the correctness of the result. The precision of an experiment is a measure of how exactly the result is determined, without reference to what the result means. It is also a measure of how reproducible the result is.It is obvious that we must consider about the accuracy and the precision simultaneously for any means of experiment. It would be a waste of time and energy to determine a result with a higher precision if we knew the result would be highly highly inaccurate. Conversely, a result can not be considered to be accurate if the precision is low. To understand this concept in a better manner, the analogy of a marksman who throws darts using a device at a target can be used.In this analogy, the device is the instrument, the marksman is the operator of the instrument, and the results are determined by the locations of darts in the target. The size of the hole produced by darts give the resolution of the instrument.If he throws the darts to the same place, but far away from the bulls-eye, he has a good precision, but not accuracy.If he throws the darts around the bulls-eye, but not to the same place, he has a good accuracy, but not precision.If he throws the darts to the same place, and almost on the bulls-eye, he has a good precision, as well as accuracy.

The use of a tape measure does not result is a change of measurements.

It's because we don't measure it directly but use measurements of two lengths to compute result. Our area mesurement depends then on precision of some other measured quantities.

Measurements can be taken to determine some of the acoustic qualities of an auditorium, but the act of measurements would not result in better sound. One would need to interpret the measurements and determine what steps could be taken to improve the acoustics. For instance, if the space is too "live" or contains too much reverberation for one's taste, dampening blocks may be placed on the walls to help absorb some of the sound. I hope that's a good first step.

precision

Gallons are determined by cubic feet. Cubic inches can be converted into cubic feet, but three measurements are needed to find cubic inches. Two measurements result in square feet, and it's impossible to determine gallons from that.

The term accuracy describes how far your observation/measurement is from the correct result. Precision describes how repeatable your results are, regardless of their accuracy..

it agrees closely with the accepted value

False

Accuracy implies that there is no deviation from the desired result. Precision implies a consistent closeness to the desired result. An archery contestant whould show poor accuracy because the arrow is always off the target center. Good precision because it is always close to the target center.