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A typical situation would be when there is a zero error.
For example, almost all rulers have a little distance before the zero-mark. Suppose you measure the length of some object repeatedly using the end of the rules rather than the zero-mark. If, otherwise you are very careful to read off the result (for example, perpendicularly so that there is no parallax) you could end up with several measures which are exactly - or very nearly - the same. That is precision. But every one of those measures will be wrong - by the length before the zero-mark on the ruler. And that is the inaccuracy.
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What is a group of precise measurements?
A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
Why are both accuracy and precision important in making a measurement?
because they are both a reliable measurement and is both accurate and precise
What is the difference between accuracy and precision and which one is more important to scientific measurement?
To be accurate is to be correct, for example, if you say it will rain tomorrow and it does rain tomorrow, then your prediction was accurate. Precision means to give a finely detailed measurement or observation, rather than an approximation. In the case of the weather prediction, a precise prediction might be on the order of, it will rain a total of 1.68 inches of rain, tomorrow. Such a prediction might or might not be accurate, but if it is, then it is also precise, much more precise than merely predicting that it will rain. Precision includes the concept of accuracy. An observation that is precise but inaccurate is useless; precision is only valuable when it is also accurate. Scientists cannot really choose between accuracy and precision since both are necessary for science to succeed, but accuracy is more fundamental. Something that is approximately correct is worth more than something that is very detailed, but wrong.
What determines the precision of a calculated result based on measurement?
the precision of the least precise measuement
What determines the precision of calculated result based on measurement?
the precision of the least precise measuement
Is it possible to have measurement that are precise but not accurate?
Yes it is possible. 21.354 inches is very precise but could be inaccurate.
Is less precise instrument always more accurate?
No. Accurate relates to how close the actual measurement the instrument measures. Precise relates to how much detail the instrument gives when measuring. They are independent to each other: An measurement can be precise and accurate (eg the value of π is 3.141592654) An measurement can be precise and inaccurate (eg the value of π is 1.733677432) An measurement can be less precise and accurate (eg the value of π is 3.14) An measurement can be less precise and inaccurate (eg the value of π is 1.73).
Can a measurement be precise without being accurate?
You can make a very precise measurement with a poorly calibrated device.
How do you spell inaccurate?
That is the correct spelling of "inaccurate" (not correct, or not precise).
Is it true that an answer is as precise as the most precise measurement from which it was calculated?
No. An answer is only as precise as the least precise measurement from which it was calculated.
What measurement is more precise and accurate?
What determines how precise a measurement is
What is a group of precise measurements?
A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
How is it possible to get three precise but inaccurate measurement of the same volume of water?
Definition of Precision: Referring to how close a group of measurements are to each other. Accuracy: Refers to how close the measurement is to the true or accepted value. If the volume of the water was 20 L and I measured it wrong one and got 19, measured it again and got 19, and then measured it a third time and got 19, that would be a PRECISE measurement, since you got the same result three times in a row. It's INACCURATE because it isn't the CORRECT measurement. Hope that helped!
A measurement is precise if?
It is precise if it is repeatable.
Why would it be important for your lab results to be both accurate and precise?
A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
What is another word for not precise?
vague, careless, inaccurate
What measurement device produces the most precise measurement?
measuring tape
