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Biased Estimator
An estimator is considered biased if it consistently overestimates or underestimates the parameter it is estimating.
Confidence Level
The probability that a confidence interval contains the true population parameter, expressing the degree of certainty in estimation.
Sample Statistic
A numerical measure that describes an aspect of a sample of the population data.
Population Parameter
A numerical value that describes a characteristic of the entire population.
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