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Accuracy vs. Efficiency — What's the Difference?

Difference Between Accuracy and Efficiency

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Definitions

Accuracy

The state of being accurate; being free from error; exactness; correctness

Efficiency

Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste.

Accuracy

The quality or state of being correct or precise
We have confidence in the accuracy of the statistics

Efficiency

The quality or property of being efficient.

Accuracy

Conformity to fact.

Efficiency

The degree to which this quality is exercised
The program was implemented with great efficiency and speed.
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Accuracy

Precision; exactness.

Efficiency

The ratio of the effective or useful output to the total input in any system.

Accuracy

The ability of a measurement to match the actual value of the quantity being measured.

Efficiency

The ratio of the energy delivered by a machine to the energy supplied for its operation.

Accuracy

Exact conformity to truth, or to a rule or model; degree of conformity of a measure to a true or standard value.
The jury doubted the accuracy of the witness' comments.

Efficiency

An efficiency apartment.
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Accuracy

The state of being accurate; freedom from mistakes, this exemption arising from carefulness; exact conformity to truth, or to a rule or model; precision; exactness; nicety; correctness; as, the value of testimony depends on its accuracy.
The professed end [of logic] is to teach men to think, to judge, and to reason, with precision and accuracy.
The accuracy with which the piston fits the sides.

Efficiency

The extent to which time is well used for the intended task.
The efficiency of the planning department is deplorable.

Accuracy

The quality of nearness to the truth or the true value;
He was beginning to doubt the accuracy of his compass
The lawyer questioned the truth of my account

Efficiency

(dated) The quality of producing an effect or effects.

Accuracy

(mathematics) the number of significant figures given in a number;
The atomic clock enabled scientists to measure time with much greater accuracy

Efficiency

The extent to which a resource is used for the intended purpose; the ratio of useful work to energy expended.
The efficiency of this loudspeaker is 40%.

Efficiency

(US) A one-room apartment.
I have an efficiency available June through July.
Fully-furnished efficiencies

Efficiency

The ratio of the output to the input of any system

Efficiency

Skillfulness in avoiding wasted time and effort;
She did the work with great efficiency

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