Accuracy vs. Precision

Accuracy vs. Precision

Accuracy (noun) is a high degree of correctness or exactness in performance or measurement; how close a measurement is to some 'true' value.

2. (adj.) [accurate]

Examples:

1. "There is a great deal of accuracy in the scientific method."

2. "The thermometer wasn't accurate, so I changed the battery in it."

3. "The math teacher didn't care if our test answers were accurate; she wanted us to show our work as well."

Precision (noun) is a high degree of repeatability or reproducibility; how close a series of repeated measurements are to one another.

Examples:

1. "The baker made multiple batches of cookies with such fine precision. Each cookie was the same color and size."

2. "A calculator has an inborn level of precision; you'll get the same answer every time."

*Tip/Hint: accuracy refers to one measurement, and precision refers to more than one.

Let's see both accuracy and precision used together in a sentence:

"The program was calibrated with both accuracy and precision."

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