Two students determine the percentage of lead in a sampleas a laboratory exercise. The true percentage is 22.52%. Thestudents’ results for three determinations are as follows:(1) 22.52, 22.48, 22.54(2) 22.64, 22.58, 22.62(a) Calculate the average percentage for each set of data andstate which set is the more accurate based on the average.(b) Precision can be judged by examining the average of thedeviations from the average value for that data set. (Calculatethe average value for each data set; then calculate the averagevalue of the absolute deviations of each measurementfrom the average.) Which set is more precise?

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