The phrase "a valid sample of" is correct and usable in written English.
It can be used when discussing a representative portion of a larger group or dataset that is deemed acceptable for analysis or evaluation.
Example: "In order to draw accurate conclusions, we need to ensure that we have a valid sample of the population."
Alternatives: "an acceptable sample of" or "a representative sample of".
A valid sample of 1255 was achieved with the response rate of 83.6%%.
The collected queries are slightly biased toward simpler 'explorative' queries, but still represent a valid sample of queries in a publicly accessible database.
A valid sample of 1378 was included in the analyses.
The remaining question was whether the respondents represented a valid sample of the study population.
These eligibility criteria were designed to help ensure a valid sample of patients were included in the trial.
Around 300 people participated in the province evaluation workshops, while 145 province and district staff completed the questionnaire, which represents a valid sample of opinions from people working directly on the program at this level.
We excluded 7 duplicate observations and those with missing data, resulting in a valid sample size of 1,907 children.
The total sample size was 33,776 with a valid sample size of 21,544 after excluding those with incomplete data on physical examination and biochemical blood tests.
Although a combination of factors determined a valid sample, the parameters of the sampling templates were the primary constraint on the data collected from the image plane; other features of the simulation e.g., the speed and trajectory of objects, the length of time an object took to travel through the frustum affected the data only indirectly.
Quality control review means a review of a statistically valid sample of active and negative cases to determine the extent to which households are receiving the SNAP allotments to which they are entitled, and to determine the extent to which decisions to deny, suspend, or terminate cases are correct.
Administer the survey to a statistically valid sample of your school population, and tabulate the results.
