The target population contains members of a group that a researcher is interested in studying. The results of the study are generalized to this population, because they all have significant traits in common.
> Continue ReadingThe "sample" is different. This is the actual group from which data is collected. It is a subset of the population and should be a typical representation of the larger group. Depending upon the size and type of the population and the type of study, different methods are available to help identify a fair sample, such as random sampling and matched sampling. Populations and samples do not need to be humans. Research can collect information on a wide range of subjects, including animals, plants and manufactured goods.
Learn more about StatisticsRecommended guidelines to set up a support group include determining if a leader possesses the qualities to lead the group; finding co-leaders; evaluating the type of target members, location and purpose of the group; choosing a name for the group; and deciding on a meeting format, states HealthCentral. After creating a support group, the next step is to announce meeting sessions through paper, radio and online advertisements to attract more members.
Full Answer >The Greek letter sigma is the commonly used mathematical symbol for population standard deviation. The Greek letter mu is also commonly used in calculations of the population standard deviation for non-overlapping populations.
Full Answer >A confidence interval for a statistical measure (range) is used to quantify the amount of uncertainty associated with a sample estimate of a population parameter. It is computed as Estimate ± Margin of Error. In a 95 percent confidence interval, for example, 95 percent of the samples are within the calculated population parameters.
Full Answer >Sampling, in statistics, is a method of answering questions that deal with large numbers of individuals by selecting a smaller subset of the population for study. One of the most prevalent types of sampling is random sampling.
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