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Population Standard Deviation
A measure that quantifies the amount of variation or dispersion of a set of data values in a population.
Estimator
A rule or formula that provides an estimate of a population parameter based on sample data.
True Value
True value refers to the actual value of a parameter or statistic in the population, which statistical estimates aim to approximate.
Confidence Interval
A range derived from sample statistics that likely contains the true population parameter at a specified level of confidence.
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