Uncertainty in Measurement Chapter 1
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Questions and Answers

What is an inherent characteristic of scientific measurements?

  • Accuracy
  • Certainty
  • Precision
  • Error (correct)
  • Which of the following is a consequence of uncertainty in measurement?

  • Increased precision
  • Absolute certainty
  • Limited reliability (correct)
  • Improved accuracy
  • What is the primary source of uncertainty in measurement?

  • Instrumental limitations (correct)
  • Human error
  • Theoretical assumptions
  • Random fluctuations
  • Which of the following is a strategy for managing uncertainty in measurement?

    <p>Averaging repeated measurements</p> Signup and view all the answers

    What is the ultimate goal of uncertainty analysis in measurement?

    <p>To quantify uncertainty</p> Signup and view all the answers

    What is true about non-zero numbers in significant figures?

    <p>They are always significant.</p> Signup and view all the answers

    What is the main purpose of significant figures in measurement?

    <p>To quantify uncertainty in measurement.</p> Signup and view all the answers

    Which of the following is an example of uncertainty in measurement?

    <p>A meter stick with an uncertainty of 0.5 mm.</p> Signup and view all the answers

    What is the unit of measurement for density?

    <p>Grams per milliliter (g/mL).</p> Signup and view all the answers

    What is the purpose of units of measurement?

    <p>To express quantities in a standardized way.</p> Signup and view all the answers

    What does the number of digits reported in a measurement reflect?

    <p>The accuracy of the measurement and the precision of the measuring device</p> Signup and view all the answers

    What is a key factor in determining the precision of a measurement?

    <p>The number of significant figures reported</p> Signup and view all the answers

    What is affected by the precision of the measuring device?

    <p>The number of significant figures reported</p> Signup and view all the answers

    What reflects the precision of the measuring device and the accuracy of the measurement?

    <p>The number of significant figures reported</p> Signup and view all the answers

    What is an important consideration when reporting measurements?

    <p>The precision of the measuring device and the accuracy of the measurement</p> Signup and view all the answers

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