observedstatistic

observedstatistic refers to a value calculated from sample data that summarizes a characteristic of the sample. It is a numerical summary used to estimate an unknown population parameter. For example, the sample mean, sample variance, and sample proportion are all observed statistics. These statistics are crucial in inferential statistics, where they are used to draw conclusions about the population from which the sample was drawn. The accuracy of an observed statistic as an estimator depends on factors such as the sample size and the sampling method used. When comparing different samples or groups, observed statistics are used to identify potential differences and test hypotheses. It is important to distinguish between an observed statistic, which is a property of a sample, and a population parameter, which is a property of the entire population.