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Accuracy and Precision

Accuracy and Precision. Accuracy vs Precision. Precision. Accuracy. A description of how close a measurement is to the true value of the quantity measured. The exactness of measurement. Accuracy vs Precision. Accuracy vs Precision. Precision. Accuracy. Systematic Error

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Accuracy and Precision

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  1. Accuracy and Precision

  2. Accuracy vs Precision Precision Accuracy A description of how close a measurement is to the true value of the quantity measured • The exactness of measurement

  3. Accuracy vs Precision

  4. Accuracy vs Precision Precision Accuracy Systematic Error What “crept in” to your experiment? Repeatability • Significant Figures • The more sig figs, the more *precise* the measurement • Reliability

  5. A Slice of Pi • Pi is the ratio of the circumference of a circle to its diameter. • It is irrational. (It goes on forever without repeating) • It has been measured very very accurately and precisely by computer. • A standard value for PI is 3.14159265358979323846264338

  6. A Slice of Pi • Standard Value: 3.14159265358979323846264338 • 3.1 • 3.23248154 • 3.14159 • 3.3 • 3.14268164 • 3.1415926424786

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