Inferential statistics.
Information obtained from the sample can be extrapolated to the whole population using statistics.
A representative sample is one where the statistics of the sample are the same as the statistics for the parent population.
When performing an experiment or gathering data for statistics, it would be very difficult to gather information for every member of the group's population. Instead, one can gather information from a sample large enough to be representative of the population.
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A population survey, better known as a census, entails the collection of each unit in the population. In sample survey information is collected from a subset of the population. The subset, or sample, needs to be selected carefully so that it is representative of the whole population and, if that requirement is met, statistics based on the sample are good estimators for the corresponding population parameters.
Information obtained from the sample can be extrapolated to the whole population using statistics.
When the sample - whether it is random or systematic - is somehow representative of the population.
A representative sample is one where the statistics of the sample are the same as the statistics for the parent population.
Statistics or data set
Data Set
When performing an experiment or gathering data for statistics, it would be very difficult to gather information for every member of the group's population. Instead, one can gather information from a sample large enough to be representative of the population.
in statistics a sample is a subset of population..
The general term statistics might be the set of numbers representing some sort of information from a sample population. The term data set can also be applied.
Statistics: Survey of an entire population, as opposed to a sample survey.
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The population mean is the mean value of the entire population. Contrast this with sample mean, which is the mean value of a sample of the population.
A population survey, better known as a census, entails the collection of each unit in the population. In sample survey information is collected from a subset of the population. The subset, or sample, needs to be selected carefully so that it is representative of the whole population and, if that requirement is met, statistics based on the sample are good estimators for the corresponding population parameters.