random sampling


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  • noun

Words related to random sampling

the selection of a random sample

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References in periodicals archive ?
And, once we do so represent it, then won't the requirement of objective randomization of the treatment be exposed as otiose, just as was the classicist's demand for objective random sampling?
"During our random sampling, we asked for 171 deeds, but got only 121, and this shows that 50 deeds were lost," he said.
Five participants were selected using simple random sampling from the population to participate in the telephone interviews.
There are two additional problems with random sampling. First, the random sample must be representative.
Joel Schwartz at the Hazard School of Public Health in Boston examined the relationship between blood pressure and lead based on measurements of each by the Public health Service in its random sampling of U.S.
In addition, two-stage sampling designs are considered, with a general probability design at the first stage (Level 2) and simple random sampling without replacement (SRS) at the second stage (Level 1).
Eventually they focused on those 22 collections which, because there had been no presampling reason to suspect test sites contained high radon concentrations, appeared to offer the most random sampling. The 22 data sets include homes from 17 states and every major geographic region, including many major metropolitan areas such as New York City, San Francisco and Houston.
The sample for this study is selected by stratified random sampling from the Teacher Education institutions of Malabar area of Kerala.
But this is the first time that researchers have looked at a random sampling of births (more than 50,000 of them, at 12 hospitals) to see if the apparent associations hold up.
In general, increasing sample size will decrease sampling error when simple random sampling is used, and other methods, such as cluster sampling and stratification sampling, can be used.
When 132 charter schools responded, the information was compared to a random sampling of traditional schools.
Explained Herrera-Lim: 'It is random sampling which allows companies to check that their products are safe even though they make millions of them without having to check each and every one.
"Simple random sampling" refers to selecting patients for an interview by subjecting all eligible patients to a randomization (e.g., through a coin flip or smartphone application).
Notations and Some Estimators in Conventional Sampling: Supposed a random sample of size n was selected with simple random sampling without replacementfrom entire units N in the population.
Statistical, stratified random sampling: This is the most widely used approach.