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4. The results of the analysis of a metal alloy were reported in terms of percent Cu (%Cu). The values obtained are 17.34%, 17.33%, 17.28% 17.29%, 17.36%. The expression of the central value significant to chemists is the arithmetic mean (or average) is the sum of the measured values, x¡, divided by the n, number of replicate measurements. n a. The mean or the average %Cu is b. The deviation from the mean, d;, is the difference (regardless of sign) between the experimental value and the arithmetic mean. The deviation is always the absolute value of the difference between the experimental data and the mean. d; =| a; – | The deviation of the experimental data 17.29% from the mean is

4. The results of the analysis of a metal alloy were reported in terms of percent Cu (%Cu). The values obtained are 17.34%, 17.33%, 17.28% 17.29%, 17.36%. The expression of the central value significant to chemists is the arithmetic mean (or average) is the sum of the measured values, x¡, divided by the n, number of replicate measurements. n a. The mean or the average %Cu is b. The deviation from the mean, d;, is the difference (regardless of sign) between the experimental value and the arithmetic mean. The deviation is always the absolute value of the difference between the experimental data and the mean. d; =| a; – | The deviation of the experimental data 17.29% from the mean is

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter2: Chemical Compounds
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Problem 143QRT: The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry...
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4. The results of the analysis of a metal alloy were reported in terms of percent Cu (%Cu). The values obtained are 17.34%, 17.33%, 17.28% 17.29%, 17.36%. The expression of the central value significant to chemists is the arithmetic mean (or average) is the sum of the measured values, x;, divided by the n, number of replicate measurements. 7 = (1tr2+x3+» ·+xn %3D a. The mean or the average %Cu is b. The deviation from the mean, d;, is the difference (regardless of sign) between the experimental value and the arithmetic mean. The deviation is always the absolute value of the difference between the experimental data and the mean. d; =| x; - The deviation of the experimental data 17.29% from the mean is
Transcribed Image Text:4. The results of the analysis of a metal alloy were reported in terms of percent Cu (%Cu). The values obtained are 17.34%, 17.33%, 17.28% 17.29%, 17.36%. The expression of the central value significant to chemists is the arithmetic mean (or average) is the sum of the measured values, x;, divided by the n, number of replicate measurements. 7 = (1tr2+x3+» ·+xn %3D a. The mean or the average %Cu is b. The deviation from the mean, d;, is the difference (regardless of sign) between the experimental value and the arithmetic mean. The deviation is always the absolute value of the difference between the experimental data and the mean. d; =| x; - The deviation of the experimental data 17.29% from the mean is
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