To be considered precise, the standard deviation of a set of measurements should be less than 10% of average value. An unknown sample with Fe3+ is analyzed through four separate titrations. The calculated weight percentages are 10.11%, 10.54%, 9.86%, and 10.36%. Calculate the following entities: Average = ______% (enter to two decimal places) Sample standard deviation = _______% (enter to two decimal places) Is this series of measurements precise (yes or no)? _______
To be considered precise, the standard deviation of a set of measurements should be less than 10% of average value. An unknown sample with Fe3+ is analyzed through four separate titrations. The calculated weight percentages are 10.11%, 10.54%, 9.86%, and 10.36%. Calculate the following entities: Average = ______% (enter to two decimal places) Sample standard deviation = _______% (enter to two decimal places) Is this series of measurements precise (yes or no)? _______
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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To be considered precise, the standard deviation of a set of measurements should be less than 10% of average value. An unknown sample with Fe3+ is analyzed through four separate titrations. The calculated weight percentages are 10.11%, 10.54%, 9.86%, and 10.36%. Calculate the following entities:
Average = ______% (enter to two decimal places)
Sample standard deviation = _______% (enter to two decimal places)
Is this series of measurements precise (yes or no)? _______
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