Question

Which best describes accuracy?
the smallness of the graduations on a measuring tool
the reproducibility of a measured value
the dependence of a measured value on a controlled value
the agreement between a measured value and an accepted value

Answer 1

Answer:

Accuracy is defined as the closeness of the measured value to the actual value. Therefore, out of the options, this is best described by A. the smallness of the graduations on a measuring tool. This is because smaller graduations mean that the value can be measured to a smaller level, making it more accurate. Moreover, smaller graduations are able to detect smaller changes, increasing the accuracy of the instrument.

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Answer 2

Answer:

The correct answer is option D: the agreement between a measured value and an accepted value.

Explanation:

Accuracy : Accuracy is defined as the closeness of measured value with respect to a specific value or accepted value. Higher the closeness between measured value and accepted value , higher is the accuracy. For example : In an experiment of measuring the height of a person. If the accepted value is 170 and the measured values are 169.9,169.8, 170.1. These measured values are very close to the acceptable value so the result is accurate.

Precision : It is the closeness in the measured values with respect to each other.