Precision, Accuracy, Human Error
Presentation
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Physics
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11th Grade
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Hard
Joseph Anderson
FREE Resource
12 Slides • 0 Questions
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Error and Uncertainties
Junior College 1
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Learning outcomes
Understand effect of systematic errors and random error in measurement
Differentiate between precision and accuracy
Absolute or relatives uncertainties
Significant figure expression
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Measurement error
Measurement Error (also called Observational Error) is the difference between a measured quantity and its true value. It includes random error (naturally occurring errors that are to be expected with any experiment) and systematic error (caused by a miscalibrated instrument that affects all measurements).
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Accuracy Vs Precision
The differentiation and the importance
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The importance of
Accuracy represents how close a measurement comes to its true (standard) value. This is important because bad equipment, poor data processing or human error can lead to inaccurate results that are not very close to the truth.
Precision refers to how closely individual measurements agree with each other.
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Significant Figure
Number of digits in a value which contributes the level of accuracy of the value is called significant figures. The number of significant figures expresses the precision of a calculated value by a scientist or an engineer.
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Rules of significant figure
Error and Uncertainties
Junior College 1
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