2006-12-08 19:18:49 · 6 answers · asked by gummystar_00 2 in Science & Mathematics ➔ Physics
- Precision:
Let's take an example : you want to measure the weight.
If you use a bathroom scale, you will be able to differentiate weight of people, as the range of people weight goes from 30 to 150 Kg, you need a precision of 0.1 Kg : The precision is sufficient to differenciate the full range of people.
Now, If you want to make a cake and weight the amount of flour, the precision will not be good enough : you need to differenciate to the scale of the gramme, therefore the kitchen scale is more precise.
- Accuracy:
Let's say that you still want to do your cake and that you have selected a kitchen scale with a good precision.
You measure your quantity of floor but forgot to remove the spoon. You will read 100 g when in fact there is only 80g of floor.
Your measure is not accurate because of this offset.
Offset is not the only reason that will affect the accuracy of your measurement system, Aging, loss of material, electronical discharge, etc...
Other example : Check the clock of your computer, the precision is good : 1 seconde, what about the accuracy: check your watch, see the difference. Which one is more accurate ?
2006-12-08 22:56:26 · answer #1 · answered by sedfr 3 · 0⤊ 0⤋
In the engineering world, you may be in a position to rely on instrumentation such as a pressure gage. The gage may be very "precise" in that it will read pressure to some fraction of a psi. However, if it is not calibrated, it may be precise, but not "accurate".
Accuracy is a measure comparing something to its actual value.
Precision is a measure relating to repeatability.
In the engineering world, you need both. I am not sure if this gets what you were after, your question is a bit confusing.
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2006-12-08 20:05:05 · answer #2 · answered by Mukluk 2 · 0⤊ 0⤋
What was the question? and what was that answer? Guess I've got neither the precision or the accuracy...
2006-12-08 19:28:19 · answer #3 · answered by barbara 7 · 0⤊ 0⤋
Snipers interior the protection rigidity could use trigonometry continuously while calculating the attitude of a shot consistent with wind speed which will alter the path of the bullet which incoporates arithmetic modern-day in physics...
2016-10-18 00:31:18 · answer #4 · answered by kigar 4 · 0⤊ 0⤋
well it depends take the military
it is paramount that you are accurate to the enemy but it would be better if you were precise such as the head for example
2006-12-08 19:26:27 · answer #5 · answered by dark aran 2 · 0⤊ 0⤋
Of what? Please be more specific.
2006-12-08 19:44:40 · answer #6 · answered by Scarp 3 · 0⤊ 0⤋