Chemistry

A student performed an analysis of a sample for its calcium content and got the following results:

14.92% , 14.91%, 14.88% , 14.91%.

The actual amount of calcium in the sample is 15.70%. What conclusion can you draw about the accuracy and precision of these results?

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  1. precision is good
    ... the four results are within 4 parts in 1490 of each other ... about .3%

    accuracy is not so hot
    ... the error is ... (14.9 - 15.7) / 15.7
    ... about 5%

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  2. Am not clear about your answer

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  3. What conclusion can be you draw about the accuracy and precision of these results

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    2. 👎
  4. What conclusion can you draw about the accuracy and precision of these results?

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    2. 👎

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