proportional sample


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Related to proportional sample: stratified sampling, sampling techniques
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Noun1.proportional sample - the population is divided into strata and a random sample is taken from each stratum
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
sample distribution, sampling, sample - items selected at random from a population and used to test hypotheses about the population
References in periodicals archive ?
Proportional sample size of 110 respondents was selected by simple random technique.
The crux of the technology in transient partial flow systems is that it reads real-time exhaust or intake air mass flow rates, then changes flow conditions to maintain proportional sample flow regardless of what the engine flow rate is.
Because sampling may potentially affect results from occurrence-area studies, for each species at each density we sampled the landscape using three techniques: a complete census, an equal-effort sample and a proportional sample.

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