For Each Historical Identification Question, Define the Term and Briefly

question 33

Short Answer

For each historical identification question, define the term and briefly describe its historical significance.
metallurgy

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Definitions:

Unbiased Estimator

A statistical estimator whose expected value is equal to the parameter being estimated, indicating accuracy across samples.

Expected Value

The long-run average value of repetitions of the same experiment or random process, calculated as the sum of all possible values weighted by their probabilities of occurrence.

Parameter

A numerical characteristic or feature of a population that is estimated using sample data.

Sample Variance

A measure of the dispersion or variability within a sample dataset, indicating how much the individual data points differ from the sample mean.