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If the true value is 21.751 grams what is the absolute error and the percent error?
Wiki User
∙ 15y ago
In order to determine the absolute error of this you would have to have a measurement or an estimate of whatever this object is. at which point you would take the difference between the two.
For example: 21.571 is the True value 20.000 is the Recorded Value.
Thus: (True value) - (Recorded Value) = Absolute error (21.571) - (20.000) = 1.571
To determine the Percent value, applying the skills learned above, it is represented by the following equation
(Recorded value - True value) / True value*100%
(20.000 - 21.571) / 21.751*100% = -7.28%
It is possible to have multiple points of absolute error for instance. If you have 3 measurements one above the true value, the true value, and one below the true value. (e.g 20, 21.571, 22.571) can be represented as +/- 1.571g
Wiki User
∙ 15y ago
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What is the percent error of a scale if bananas weighing 567 grams on the scale actually weigh 522 grams?
8.6
What is the percent error formula?
Percent Error is the difference between the true value and the estimate divided by the true value and the result is multiplied by 100 to make it a percentage. The percent error obviously can be positive or negative; however, some prefer taking the absolute value of the difference. The formula is the absolute value of the experimental value (minus) the theoretical value divided by theoretical value times 100. % error = (|Your Result - Accepted Value| / Accepted Value) x 100
What is absolute and relative error?
An absolute measurement is based on first principle measurements. Most measurements are comparison. An absolute measurement doesn't rely on calibration of the instrument. For example wavelength measurements can be made without calibration by looking at the number of beats per seconds (Hertz). Absolute error is the magnitude of the difference between the exaxt value of the value measured. It can be expressed as a number, e.g. the molecular weight measured is 27 000 grams per moles while the known molecular weight of the structure is 27 500, the absolute error is 500 grams per mole.
How are the error and the percent error of a measurement calculated?
Take the correct value, subtract the value you got, and then divide that figure by the correct value. Then take the absolute value of that and multiply by 100. For example, say I weighed something and got that it was 2.5 grams, but it really was 2.7 grams. 2.7-2.5=.2. .2/2.7=.074. .074*100=7.4. Thus, I had 7.4% error. Another example: 16-15=-1. -1/15=-.067. .067*100=6.7% error.
A student measured the mass of an object and found it to be 658 grams. The actual objects mass is known to be 755 grams what is the percent error of the measurement?
It is approx 12.8%.
A student measured the mass of a small object and found it to be 56.0 grams The object's mass is known to be 55.0 grams What is the percent of error in the student's measurement?
1.8%
The accepted value for a quantity is 5.67 grams If the measured value is 5.89 grams what is the percent error?
(Measured mins Accepted) divided by Accepted all X 100 (5.89 - 5.67) divided by 5.67 X 100 .22 / 5.67 = .0388 .0388 x 100 = 3.88% 3.88% is the percent error
What percent is 6 grams of 1000 grams?
6 grams is 0.6 percent of 1,000 grams.
What is error and percentage error?
Percentage error measures the error in relation to the quantity measured. For example if something weighs 100 grams with a possible error of plus or minus 5 grams, this is an error of 5%
Find the percent error of a scale if bananas weighing 567 grams on the scale actually weighs 522 grams?
The scale displayed a weight that was 7.94% low. (rounded) We say it that way because the percent error may not be constant over the scale's entire range. It was 7.94% at this particular point, but the scale may be more or less accurate at other weights.
Whats is 200 grams reduced to 120 grams per burger in percent lf decrease to the nearest percent?
200 grams reduced to 120 grams per burger is 60 percent.
How do you compute the percent error or formula?
Actual results divided by your expected results. Subtract that number from 1. Multiply that by 100. For example: Actual result : 9 grams Expected result: 10 grams 9/10 = .9 1 - .9 = .1 .1 x 100 = 10 10% error.
