validity

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validity

[və′lid·əd·ē]
(mathematics)
Correctness; especially the degree of closeness by which iterated results approach the correct result.

validity

the extent to which a measure, indicator or method of data collection possesses the quality of being sound or true as far as can be judged. For example, if a psychological measure, such as an intelligence test, is considered to be valid, this means that it is thought to measure what it sets out to measure. If social survey observations are said to have produced valid data, then they are considered to be true reflection of the phenomenon being studied in the population being studied (e.g. projections of voting behaviour), and the survey method could be said to have validity. Compare RELIABILITY.

In practice, in sociology and the social sciences generally, the relation between indicators and measures on the one hand and the underlying concepts they are taken to represent is often contested (see OFFICIAL STATISTICS, MEASUREMENT BY FIAT).

References in periodicals archive ?
As a friend recently pointed out, this negates what I thought was a valid argument for driving such a gas guzzler and leaving such a large 'footprint' on the environment.
The animal rights protesters were handed a valid argument for their cause by the people who should be showing an example of the compassionate side of our sport.
There will always be a valid argument about how far local authorities should go to attract national organisations in the name of regeneration.
Thus, there is a valid argument that the first proper South African test team--although not the official one which was confined only to white players--was the side skippered by D'Oliveira.
I believe we have a valid argument for voluntary manslaughter as the ultimate outcome,'' Deputy Public Defender Fred Gagliardini said.
THE Trevor Francis adoration brigade continue to chunter on about his dismissal, against which there can be no valid argument.
To say that fear of the slippery slope is a valid fear is not he same as saying it is a valid argument against a particular choice.
The judge found that Southern Union is proceeding with discovery of evidence in an existing lawsuit, and that Southern Union has presented no valid argument as to why it cannot obtain the discovery it needs in a pending Nevada action as well.
Leeming may have a valid argument, and in a 12-week spell since November 22 Delaval have only been able to fit in five Northern Alliance games.
Coun Shotton, of Connah's Quay, said: "I think it's a valid argument.
It is obviously a valid argument, but Amarillo Slim hasn't got close to the 14.
In itself a valid argument but there are two differences.