biased estimator

a value obtained from sample data that consistently under- or overestimates the true quantity in the larger population of interest. In other words, a biased estimator is one whose value on average differs from the value of the parameter it purports to represent. Also called biased statistic. Compare unbiased estimator.

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Psychology term of the day

November 22nd 2024

selective agent

a factor in the environment that exerts selection pressure and brings about natural selection.