The phrase "narrow sample" is correct and usable in written English.
You can use it to describe a limited selection of something that you are studying or analyzing. For example, "The experiment tested a narrow sample of 100 participants in order to determine the effects of the drug."
Isaf said the study "suffered from irrelevant generalisations, narrow sample sets, unprofessional rhetoric and sensationalism".
Most of what we know about the genetic basis of disease risk rests upon a narrow sample of the population.
A good man I know says he thinks Scotland will vote yes – an opinion that may be based around the narrow sample of the local shinty club.
Yet these represent only a narrow sample of a vast national industry, which at its height was second only to Hollywood in the number of films it produced, some 200 to 500 a year.
The scientific fears have so far proved groundless and opponents seem to be playing upon them much less - at least to judge by the narrow sample of criticism of Mr Lynas's speech.
As a final result of the resolution improvement experiment, the narrow sample pitch of 0.4 μm was successfully resolved beyond the diffraction limit of 0.74 μm with relatively less speckle noise.
When faced with a living tree or intact structure, researchers will bore long, narrow samples from the trunk — biopsies, essentially.
When faced with a living tree or intact structure, researchers will bore long, narrow samples from the trunk biopsies, essentially.
The Customs Service has challenged the findings in the report, saying that the accounting office investigation was based on a narrow sampling of information stored in the computer system.
The influence of heat-losses on the flame dynamics in narrow samples of energetic material is investigated numerically.
In a more narrow sampling, Forbes magazine on Sept. 22 estimated that the loss for 10 oligarchs whose wealth was primarily in public companies totaled $42.75 billion, or 34.1percentt of their estimated worth on Jan . 1
