$\overline{)\mathbf{average}\mathbf{}\mathbf{=}\mathbf{}\frac{\mathbf{sum}\mathbf{}\mathbf{of}\mathbf{}\mathbf{the}\mathbf{}\mathbf{measurement}}{\mathbf{number}\mathbf{}\mathbf{of}\mathbf{}\mathbf{measurement}}}$

Two students determine the percentage of lead in a sample as a laboratory exercise. The true percentage is 22.52%. The students results for three determinations are as follows:**1. **22.52, 22.48, 22.54**2. **22.64, 22.58, 22.62

Precision can be judged by examining the average of the deviations from the average value for that data set. Calculate the average value of the absolute deviations of each measurement from the average for the first set.

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