15
QuizMultiple Choice

Using Math to Analyze Data

Question 15 • TX-Chemistry A

Which best describes accuracy?

Answer
A
the smallness of the graduations on a measuring tool
B
the reproducibility of a measured value
C
the dependence of a measured value on a controlled value
D
the agreement between a measured value and an accepted value

Explanation

Accuracy describes how close a measured value is to the accepted or true value. For example, if the accepted value is 10.0 and a measurement is 10.1, that measurement is fairly accurate. Reproducibility describes precision, while the smallness of graduations describes a tool’s resolution.

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