The phrase "a preliminary sample" is correct and usable in written English.
It can be used when referring to an initial or trial version of something, often in research or testing contexts.
Example: "Before conducting the full study, we collected a preliminary sample to gauge the feasibility of our approach."
Alternatives: "an initial sample" or "a trial sample".
His Miscellaneous Observations on the Tragedy of Macbeth (1745), intended as a preliminary sample of his work, was his first significant Shakespeare criticism.
Based upon a preliminary sample, an α of 0.05 and a ß of 0.2 (power 0.8), we anticipated a sample size of 20 patients per group to detect a difference of 1000 mL.
Even if a preliminary sample selection is applied, many samples cannot meet the criteria for acceptable paleointensity data, and the criteria are becoming increasingly more rigorous (e.g., Paterson et al. 2014).
A preliminary sample of 350 citations from scoping searches was discussed by the qualitative review team to inform inclusion criteria for the mapping (see table 1).
Although this is a preliminary sample of data from a small group of subjects, this finding suggests that accuracy training, in addition to strength training, may also contribute to the rehabilitation of swallowing difficulties.
A preliminary sample size calculation was based on a previous study in which researchers investigated ANP concentrations after VL with 500 ml of 6% HES and 1,000 ml of Ringer's lactate solution in patients before caesarean section [ 26].
If these means are unknown, then it sometimes pays to estimate these from a large preliminary sample that is subsampled in the second phase.
Since this study involves a small preliminary sample, directions for future research in Guatemala should also include more in-depth ethnographic investigation about how cultural beliefs and practices, as well as social relations, impact care among indigenous diabetics.
It generally benefits from a simple implementation and minimal preliminary sample preparation.
Percentiles were based on a preliminary norm sample of about 300 adolescents and young adults.
This yielded a preliminary analytic sample of 788 women.
