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How can we minimize error

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How can we minimize error
  • 1 answers

Sia ? 6 years, 6 months ago

Type of Error Example How to minimize it
Random errors You measure the mass of a ring three times using the same balance and get slightly different values: 17.46 g, 17.42 g, 17.44 g Take more data. Random errors can be evaluated through statistical analysis and can be reduced by averaging over a large number of observations.
Systematic errors

The cloth tape measure that you use to measure the length of an object had been stretched out from years of use. (As a result, all of your length measurements were too small.)

The electronic scale you use reads 0.05 g too high for all your mass measurements (because it is improperly tared throughout your experiment).

Systematic errors are difficult to detect and cannot be analyzed statistically, because all of the data is off in the same direction (either to high or too low). Spotting and correcting for systematic error takes a lot of care.

  • How would you compensate for the incorrect results of using the stretched out tape measure?
  • How would you correct the measurements from improperly tared scale?
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