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Measurement error: obviously!

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โˆ™ 2013-11-08 14:17:33
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Q: Which property of a measurement is best estimated from the percent error?
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Percent error formula?

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 |.

The height of a plant is 45 cm with an estimated absolute error of 0.9 cm what percent is the relative error?

To get the relative error is the maximum error over the measurement. So the maximum error is the absolute error divided by 2. So the maximum error is 0.45. The relative error is 0.45 over 45 cm.

How do accuracy and precision of measurement affect calculated values and percent error?

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

A high percent error refers to?

A high percent error indicates that a certain value is very far from the accepted value. Percent error is the comparison of an estimated value to an exact one.

Find the greatest possible error and the percent error for each measurement 3cm 6cm 36.85g?


If percent error in measurement of mass is 3 percent and percent error in measurement of velocity is 4 percent then what will the percentage error in measurement of kinetic energy?

Kinetic Energy = 1/2 (mass) (velocity)2Measurement of mass is in error by 3%.Measurement of velocity is in error by 4%.If both are low, then KE is measured as(True KE) x (.97) x (.96)2 = 0.894 TKE = 10.6% low.If both are high, then KE is measured as(True KE) x (1.03) x (1.04)2 = 1.114 TKE = 11.4% high.If one is high and the other low, then the net error is in between these limits.

What are percent errors?

A percentage error for a measurement is 100*(True Value - Measured Value)/True Value.

IF The weight of a rock is measured at 2.5 pounds what is the percent error in this measurement?

It depends on the calibration of the instrument you are measuring with.

What is the percent error of the measurement 7cm?

what is the number supposed to be if you git 7 cm? Percent error is the percentage that you're incorrect by, so you need another measurement. to do it, you find the difference and then divide by the original so (7-x)/true value then multiply by 100 to get percentage.

What is the percent error of 4cm?

A percent error depends on the size of the measurement as well as the error itself. It's very intuitive to think about: If you're measuring a piece of paper and you're off by 4 cm, you'll have problems; if you're measuring the moon, that's nothing. A bigger percent error is a bigger deal to an engineer. You can calculate it the same way as any percentage: Divide the error by the total length of the measurement, then multiply by 100 to convert it from a proportion to a percentage.

When an error of 1 percent is made in the length of a square the percentage of error in the area of a square will be?

area= side^2 let the symbol # denote error in measurement #area/area= 2(#length/length) #area/area*100= 2(#length/length)*100 percent error in area= 2*percent error in length=2% 2 per cent

What is the percentage error of a length measurement of 0.229 cm if the correct value is 0.225 cm?

.229/.225 = 1.0178 percent error = (1.0178 - 1) times 100 to get to percent = .0178 x 100 = 1.78%

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