sample

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Related to stratified random sample: sampling techniques, cluster 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 ?
TY values were calculated by subtracting all 150 item scores on the MSPI-R for each member of the stratified random sample from all 150 item scores on the MSPI-R for each individual in the reference group, with the resulting differences being squared.
Data Source: The data are from a stratified random sample of more than 5,000 hemodialysis patients in the United States who were treated at about 140 dialysis facilities between August 2010 and April 2012, corroborated by Medicare claims data.
MORTECH 2010, based on a stratified random sample of mortgage lenders, found that:
On the other hand, the McREL data is not a stratified random sample of the US teacher population (the way the PBS data is).
Of the 121 students participating in the study, Certo interviewed a stratified random sample of 24, after they participated in such small-group literature discussions for four months.
6) These estimates differ from Savage and Hodges (2006) because their analysis was based on a stratified random sample.
METHODS: A stratified random sample of 467 residents of East Boston, Massachusetts, 65 years of age or older, were given structured neurologic examinations.
Using the 2006 Canadian Census, a stratified random sample of 6,421 women over age 14 with singleton live births in the previous three months were identified and interviewed about socio-economic and demographic information; reproductive history; folic acid use; prenatal care; smoking, alcohol and street drug use; stress and support; physical and sexual abuse; information received about pregnancy, birth and post-partum issues; interventions during pregnancy, labour and delivery; post-partum health and care; postpartum depression; and infant feeding.
The CHI survey was mailed to a stratified random sample of 3,000 RNs licensed to practice in Colorado as of October 2008.
Creating a stratified random sample begins by dividing the population into subgroups (known as strata) based on one or more essential characteristics.
Between 1998 and 2000 McKenzie Leiper re-interviewed the 60 women from the first two samples and interviewed an additional sample of 50 women recruited from a stratified random sample drawn from the Law Society lists and included "women of all ages and practice types, representing a broad range of racial and ethnic backgrounds" (p.
We surveyed a stratified random sample of 595 publicly held companies and, after removing ineligible companies from the sample and population, obtained 406 usable responses and a weighted response rate of 73 percent.