The average deviation shows how precise a series of measurements are. Compare the preci- sion of the volume measurements obtained using the 25- and I00-mL graduated cylinders. Do these values really represent the precision of the graduated cylinders themselves?
The average deviation shows how precise a series of measurements are. Compare the preci- sion of the volume measurements obtained using the 25- and I00-mL graduated cylinders. Do these values really represent the precision of the graduated cylinders themselves?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Use the data table to answer the following questions
Transcribed Image Text:6. The average deviation shows how precise a series of measurements are. Compare the preci-
sion of the volume measurements obtained using the 25- and 100-mL graduated cylinders.
Do these values really represent the precision of the graduated cylinders themselves?
7. Assume that the average volume found using the 25-mL graduated cylinder in Part B is
the "true" or accepted value of the volume. Calculate the percent error for the average
volume of water measured using the 100-mL graduated cylinder. The percent error is
calculated as follows:
| measured value
accepted value |
percent error =
x 100%
accepted value
8. Does percent error measure accuracy or precision? Explain.
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