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Essential Factors in Measurement Accuracy

Understanding factors like error, validity, reliability, and precision is crucial for accurate measurements in various systems, including digital ones. Learn about characteristic errors and the impact of instrument insertion errors.

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Essential Factors in Measurement Accuracy

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  1. ENTC 4350 HOMEWORK SET 2

  2. Chapter 4, Question 5. • List seven factors in making a good measurement: Error, validity, reliability, repeatability, accuracy, precision, resolution.

  3. Chapter 4, Question 18. • List several types of characteristic errors. • zero offset. • gain • processing • linearity • hysteresis • repeatability • resolution.

  4. Chapter 4, Question 19. • For digital systems, overall error must include the quantization error caused by the digital nature of the circuits.

  5. Chapter 4, Question 21. • A voltage measurement error is caused by the integration time window of a digital voltmeter. This is a dynamic error.

  6. Chapter 4, Question 22. • If a low-impedance voltmeter is inserted into a high-resistance dc circuit, a instrumentinsertion error is created.

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