0
What sources of error would account for differences in measurement of the same thing?
Wiki User
∙ 11y ago
It really depends on the type of experiment performed. But in any given experiment, there could be hundreds of variables that, when inadvertently changed, can affect the results.
__________________________________________________________________
Laboratory mice are similar but not identical to each other.Wiki User
∙ 10y ago
Wiki User
∙ 15y agoThe primary source of error in measurement is the human doing the measurement.
Some measurement devices also influence the item they are measuring. Consider a thermometer. If the thermometer is one temperature and it is inserted into something it is to measure of a different temperature, the thermometer will transfer heat to or from the surrounding material, thereby changing the material's temperature.
When a tool is used for measurement, the engineer should consider how that tool might effect the item being measured and estimate whether that effect is significant or insignificant. Using the example above, a thermometer inserted in a small quantity of a material being measured will have a much greater effect than one inserted into a large quantity of material. To a large extent this determination of whether the tool used will have a significant error is based on the engineer's own experience.
Wiki User
∙ 14y agoThe experimental conditions and instrumental errors.
Wiki User
∙ 11y agopointing at the same point may be changed and shaking of your hand may differ the measurements
Wiki User
∙ 11y agoYou might measure wrong the second time
Wiki User
∙ 9y agocontamination
Add your answer:
Earn +20 pts
If error in the measurement of momentum of a particle is 100 percent then the error in the measurement of kinetic energy is what?
p=mv %errror in p= %error in m+%error in v lowest value of m=0 hence %error in velocity=100% k.e=%error in mass=2*%error in velocity K.E=200% similarly K.Eminimun=100% total error in K.E = 100+200 =300 hence error in ke = 300%
What are sources of error in principle of moments experiment?
What are some precautions and source of error in the principle of moments
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.
An error in which would result in a greater error in the density of the cylinder mass radius or length?
It depends on the relation R/L. If L » R, the sensitive measurement is the radius R. If L « R, the sensitive measurement becomes the length.
What are Precautions and sources of error of diffraction grating experiment?
taking the measurements
What sources of error would account for the differences in measurement of the same thing?
You might measure wrong the second time
What source of error would account for differences in measurement of the same thing?
You might measure wrong the second time
What are the sources of error in the experiment calorimetry measurement?
Energy loss due to leaks in the calorimeter
What are the sources of error in regression model?
Random error, measurement error, mis-specification of model (overspecification or underspecification), non-normality, plus many more.
Which property of a measurement is best estimated from the percent error?
Measurement error: obviously!
If a measurement is small is the percentage error high?
yes, it is. The smaller the measurement, the higher the percentage error.
Why do caluculated pH values not agree completely with measured pH values?
Because there maybe sources of error in the measurement of pH. Even if you try to eliminate the sources of error, you may get very very close the calculated value but its very difficult to get it exactly the same. Hope that helped.
What are the two factors affects accurate measurement?
Calibration error and measurement error. Also, if the measurements are of different objects there may be random error.
Sources of error in filtration?
What are the sources of error in a solubility lab containing potassium crystal
What is an error in measurement?
A error in measurement is when the measurement taken is not actually correct. For instance, you measure a gap as 49 centimetres wide. You cut the plank of wood to fit that measurement. Then discover the wood you have just cut is too wide to neatly fit the gap. There has been an error in the measurement you have taken.
How weighing by difference eliminates systematic balance error in analysis of an unknown acetic acid solution experime?
Weighing by difference can reduce, but not eliminate, systemic errors in an experiment because systemic errors do not arise simply from errors in measurement, but from a variety of sources. Weighing by differences is still advised whenever possible.
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 |.
