The phrase "a special sample of" is correct and usable in written English.
It can be used when referring to a unique or specific example of something, often in contexts like research, marketing, or product testing.
Example: "We are excited to present a special sample of our new product line at the upcoming trade show."
Alternatives: "a unique example of" or "an exclusive selection of".
A special sample of respondents in Pittsburgh, PA deals with labor questions about strikes, workers, and government ownership of companies.
Reineck explained that McCartney's bass had been made with great attention to detail (Hofner had supplied a special sample of the wood grain), but there were also variations.
In July 2008 the Harvard School of Public Health released survey results on hurricane preparedness of more than 5,000 participants from eight coastal states, plus a special sample of New Orleans residents.
From the website: "University Presses in Space" showcases a special sampling of the many works that university presses have published about space and space exploration.
Peters et al. (2005) proposed a formula for calculating the equivalent vitrinite reflectance of a special sample using MPI-1 (Fig. 10).
These "consistent" non-citizens give us a special sample that can test the reliability of the data.
This effect size seems enormous, but must be seen within the special limited sample of families and pupils that contributes to estimating the coefficients.
A retrospective cross-sectional mixed methods study was carried out combining a detailed coding process, frequent generation of data summaries using descriptive statistical analysis, and thematic analysis of a special-case sample of reports.
The probability of individual units within strata to be sampled can nevertheless be calculated, which makes this type of sampling a special case of probability sampling and different from non-probability or purposive sampling as described by Cameron et al. (2003).
Moreover, tips and suggestions are provided regarding special sample preparation, when needed, in the assessment of nanoscale fibrous composite materials.
Latin hypercube sampling appears to be a special case of balanced sampling.
