random sample


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Related to random sample: stratified random sample
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Words related to random sample

a sample in which every element in the population has an equal chance of being selected

a sample grabbed at random

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References in periodicals archive ?
To comprehensively compare the performance of risk adjustment in our matched sample versus the random sample, we fit several risk adjustment algorithms to both samples.
Calderdale Council's Cabinet member for regeneration and economic development, Clr Barry Collins, said: "This survey, sent out to a random sample of Calderdale residents, will enable us to see where we're doing well and also identify areas where we can improve.''
The availability of the Australian Bureau of Statistics (ABS) CensusAtSchool website meant that students could move beyond their classes and collect random samples from a pseudo-population of Year 5 students, observe variation, and make decisions.
In blood group A, 22.7% increase was seen in random samples; 19.7% in B, 25% in AB and 22.6% in blood group O after taking breakfast.
If a random sample is determined without the benefit of cell phones, would the lack of face-to-face interviews in the second round of the survey (when respondents answer a few survey questions using only their cell phones) undermine the credibility of the poll itself?
Several previous studies reported that urine samples obtained in the first morning void yield lower values than random samples collected throughout the day (3-5), and the first morning void sample has been observed to correlate more closely with results of a 24-h collection than results for a random urine sample (5).
Results for this Gallup poll are based on telephone interviews conducted July 8-11, 2010, with a random sample of 1,020 adults living in the continental U.S., selected using random sampling.
If all strata are identical populations, conventional control charts would act as if the stratified sample was a random sample from that common population.
To reach the conclusion, Dr Michael Lewis of Cardiff University's School of Psychology collected a random sample of 1205 black, white, and mixed-race faces.
Therefore, when a random sample has been obtained, the analyst should assess the extent to which the characteristics of the sample match the characteristics of the target population.
Of more than 1.7 million Medicare patients in the random sample, 5,594 had the diagnostic code for MDS.
The postal survey is being carried out at the same time by all local authorities in England to a random sample of households around the borough.
A RANDOM sample of petrol filling stations across the region said last night that, while stocks were running low, most still had some petrol and diesel, although some had run out completely.
The survey was conducted online in January 2008 with a random sample of 1,210 African Americans and 1,004 adults of other races.