error (redirected from error of measurement)

error /er·ror/ (er´er) a defect in structure or function; a deviation.

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inborn error of metabolism  a genetically determined biochemical disorder in which a specific enzyme defect causes a metabolic block that may have pathologic consequences at birth or in later life.

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er·ror (rr)

n.

1. A defect or insufficiency in structure or function.

2. An act, assertion, or decision, especially one made in testing a hypothesis, that unintentionally deviates from what is correct, right, or true.

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error,

n a violation of duty; a fault; a mistake in the proceedings of a court in matters of law or of fact.

error, legal,

n a mistaken judgment or incorrect belief as to the existence or effect of matters of fact, or a false or mistaken conception or application of the law.

error, numerical,

n the amount of loss or precision in a quantity; the difference between an accurate quantity and its calculated approximation. Errors occur in numerical methods; mistakes occur in programming, coding, data transcription, and operating; malfunctions occur in computers and are caused by physical limitations of the properties of materials.

error of measurement,

n the deviation of an individual score or observation from its true value, caused by the unreliability of the instrument and the individual who is measuring.

error, sampling,

n any mistake in drawing a sample that keeps it from being unrepresentative; selection procedures that are biased; error introduced when a group is described on the basis of an unrepresentative sample.

error, variance,

n that part of the total variance caused by anything irrelevant to a study that cannot be experimentally controlled.

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error

the wrong answer in an experiment or result to a questionnaire.

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experimental error

of two types, errors of objectivity when the experimenter knows the groups and the expected result, and errors of detection or measurement due to inadequate technique or the uneven application of measuring techniques.

random error

error which occurs due to chance, such as sampling error.

sampling error

one due to the fact that the result obtained from a sample is only an estimate of that obtained from using the entire population.

systematic error

when the error is applied to all results, i.e. those due to bias.

error types I and II

in making a statistical test, you can reject the null hypothesis when it is true (type I) or accept the null hypothesis when it is false (type II).

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error An unintentional deviation from standard operating procedures or practice guidelines Lab medicine An erroneous result from a Pt sample, the frequency of which reflects the lab's QC procedures and adherence to well-designed procedure manuals Medtalk See Misadventure, Honest error, Human error Patient care The failure of a planned action to be completed as intended–error of execution or the use of the wrong plan to achieve an aim–error of planning Statistics see Type I error, Type II error Vox populi → medtalk Opportunity for improvement.