Problem: 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, 22.542. 22.64, 22.58, 22.62(a) Calculate the average percentage for each set of data, and state which set is the more accurate based on the average.

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FREE Expert Solution
FREE Expert Solution

We’re being asked to calculate the average percentage for each set of data given and determine which set is more accurate.


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

average=sum of the measurementsnumber of measurements


Calculate the average percentage for each set of data:

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Problem Details

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
(a) Calculate the average percentage for each set of data, and state which set is the more accurate based on the average.