sample

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Related to stratified sample: Simple random sample, Systematic sample

sample

  1. part of a total population that can be analysed to make inferences about the whole population (see SAMPLING).
  2. a small amount of raw material or finished product whose quality or performance can be tested as a guide to the quality or performance of a whole batch of material or product (see QUALITY CONTROL, ACCEPTANCE SAMPLING).
  3. a small trial pack of a product or brand which is used to encourage buyers to try it out (see SALES PROMOTION).
References in periodicals archive ?
A stratified sample of 520 students was invited to participate in the study.
Is there a difference in school-wide student pass rates on Math assessments between an experimental group of elementary, middle, and secondary RAMP-designated schools (2007-2009) and a stratified sample of control schools at one particular point in time (2009)?
3) Estimates are from Hodges and others (1984) because the original plot selection was based on a stratified sample with optimum allocation of effort which would cause a simple random sample analysis to be biased.
GAO analyzed a stratified sample of FDA's 3R incentives files, 3R data provided by HHS, HHS's 3R policy and FDA's guidance, and interviewed HHS, FDA, and OPM senior officials.
The web sites that were examined were drawn from a stratified sample of public libraries in the United States, with approximately equal numbers of libraries included from each of five different population ranges.
Use of a stratified sample allows you to control the proportion of the sample being drawn from each apartment unit type, thereby controlling for unit-mix sampling error.
A random stratified sample of doctors and nurses (N=150) was selected from the list of 2 200 health professionals employed at the hospital.
The NAEP is only administered to a stratified sample of students.
Prior to adopting new materials the curriculum, Anderson told her, district leaders sent surveys to a random stratified sample of parents, asking them how they felt about what the district was teaching students at every grade level up to that point.
A probabilistic stratified sample of public and private schools (71) was selected from the eleven health administrative regions of Puerto Rico, according to the type of school and economic status.
All data were pooled in a stratified sample to estimate overall total coverage in the PPHC area.
District Example: A district may want to consider surveying every school administrator in the district, select a stratified sample of teachers to survey, survey all district administrators, and conduct site visitations in every school that serves students.