A laboratory instructor gives a sample of amino-acid powderto each of four students, I, II, III, and IV, and they weigh the sam-ples. The true value is 8.72 g. Their results for three trials areI: 8.72 g, 8.74 g, 8.70 gII: 8.56 g, 8.77 g, 8.83 gIII: 8.50 g, 8.48 g, 8.51 gIV: 8.41 g, 8.72 g, 8.55 g(a) Calculate the average mass from each set of data, and tellwhich set is the most accurate.(b) Precision is a measure of the average of the deviations ofeach piece of data from the average value. Which set of data isthe most precise? Is this set also the most accurate?(c) Which set of data is both the most accurate and most precise?(d) Which set of data is both the least accurate and least precise?
A laboratory instructor gives a sample of amino-acid powderto each of four students, I, II, III, and IV, and they weigh the sam-ples. The true value is 8.72 g. Their results for three trials areI: 8.72 g, 8.74 g, 8.70 gII: 8.56 g, 8.77 g, 8.83 gIII: 8.50 g, 8.48 g, 8.51 gIV: 8.41 g, 8.72 g, 8.55 g(a) Calculate the average mass from each set of data, and tellwhich set is the most accurate.(b) Precision is a measure of the average of the deviations ofeach piece of data from the average value. Which set of data isthe most precise? Is this set also the most accurate?(c) Which set of data is both the most accurate and most precise?(d) Which set of data is both the least accurate and least precise?
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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A laboratory instructor gives a sample of amino-acid powderto each of four students, I, II, III, and IV, and they weigh the sam-ples. The true value is 8.72 g. Their results for three trials areI: 8.72 g, 8.74 g, 8.70 gII: 8.56 g, 8.77 g, 8.83 gIII: 8.50 g, 8.48 g, 8.51 gIV: 8.41 g, 8.72 g, 8.55 g(a) Calculate the average mass from each set of data, and tellwhich set is the most accurate.(b) Precision is a measure of the average of the deviations ofeach piece of data from the average value. Which set of data isthe most precise? Is this set also the most accurate?(c) Which set of data is both the most accurate and most precise?(d) Which set of data is both the least accurate and least precise?
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