stratified sampling वाक्य
उदाहरण वाक्य
मोबाइल
- The figures in the surveys should be scaled to the population to render the surveys more accurate as per stratified sampling-I'm surprised they have not done this . talk ) 15 : 46, 30 October 2010 ( UTC)
- The main difference between cluster sampling and stratified sampling is that in cluster sampling the cluster is treated as the sampling unit so analysis is done on a population of clusters ( at least in the first stage ).
- Even if a stratified sampling approach does not lead to increased statistical efficiency, such a tactic will not result in less efficiency than would simple random sampling, provided that each stratum is proportional to the group's size in the population.
- To do this precisely one would have to already know the integral, but one can approximate the integral by an integral of a similar function or use adaptive routines such as stratified sampling, recursive stratified sampling, adaptive umbrella sampling or the VEGAS algorithm.
- To do this precisely one would have to already know the integral, but one can approximate the integral by an integral of a similar function or use adaptive routines such as stratified sampling, recursive stratified sampling, adaptive umbrella sampling or the VEGAS algorithm.
- Urban & Associates Inc . did the study for the ASNE, using a national stratified random telephone survey of 3, 000 interviews, 16 focus groups and a random, stratified sample of 1, 714 journalists at American newspapers with daily circulation of 5, 000 or more.
- Urban & AMP; Associates Inc . did the study for the ASNE, using a national stratified random telephone survey of 3, 000 interviews, 16 focus groups and a random, stratified sample of 1, 714 journalists at American newspapers with daily circulation of 5, 000 or more.
- A rule of thumb that is used to ensure this is that the population should consist of no more than six strata, but depending on special cases the rule can change-for example if there are 100 strata each with 1 million observations, it is perfectly fine to do a 10 % stratified sampling on them.
- Finally, in some cases ( such as designs with a large number of strata, or those with a specified minimum sample size per group ), stratified sampling can potentially require a larger sample than would other methods ( although in most cases, the required sample size would be no larger than would be required for simple random sampling.
- Third, it is sometimes the case that data are more readily available for individual, pre-existing strata within a population than for the overall population; in such cases, using a stratified sampling approach may be more convenient than aggregating data across groups ( though this may potentially be at odds with the previously noted importance of utilizing criterion-relevant strata ).
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