The **average** or **mean **can be calculated using the following equation:

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

**Calculate the average percentage for each set of data:**

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

Tell which set is the more accurate based on the average.

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