Experiment 5-Data Anolysis for Accuracy and Precision - A second group of students performed the experiment to determine the percentage of sugar Bazooka chewing gum. The student's results were 55.5%, 66.5%, 66.2%, and 66,7%. Should the students take the average of all four measurements? Why or why not? Will including the measurement affect the accuracy, precision, or both - why?

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
ChapterA: Scientific Notation And Experimental Error
Section: Chapter Questions
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Chemistry 130
Experiment 5-Dota Anolysis for Accuracy and Precision
3. A second group of students performed the experiment to determine the percentage of sugar in
Bazooka chewing gum. The student's results were 5.5%, 66.5%, 66.2%, and 66,7%. Should the
students take the average of all four measurements? Why or why not? Will including the
measurement affect the accuracy, precision, or both - why?
Instructor Initials
4. A third group of students performed the experiment to determine the percentage of sugar in Bazooka
chewing gum. The results were 62.5%, 68.5%, and 62.5%, and 67.7%. The mean is 65.3%. The
average deviation is 2.8%.
(a) Calculate the RAD in ppt. (show equation). Based on the RAD, how precise where the students?
Explain.
(b) Assuming the theoretical value of sugar in Bazooka chewing gum is 66.7%, calculate the student's
percent error (show equation).
(c) Compare the precision and the accuracy. How would you describe the data? Explain.
Transcribed Image Text:Chemistry 130 Experiment 5-Dota Anolysis for Accuracy and Precision 3. A second group of students performed the experiment to determine the percentage of sugar in Bazooka chewing gum. The student's results were 5.5%, 66.5%, 66.2%, and 66,7%. Should the students take the average of all four measurements? Why or why not? Will including the measurement affect the accuracy, precision, or both - why? Instructor Initials 4. A third group of students performed the experiment to determine the percentage of sugar in Bazooka chewing gum. The results were 62.5%, 68.5%, and 62.5%, and 67.7%. The mean is 65.3%. The average deviation is 2.8%. (a) Calculate the RAD in ppt. (show equation). Based on the RAD, how precise where the students? Explain. (b) Assuming the theoretical value of sugar in Bazooka chewing gum is 66.7%, calculate the student's percent error (show equation). (c) Compare the precision and the accuracy. How would you describe the data? Explain.
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