estimator

/'estimetiə/
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estimator

An estimator reviews a blueprint at a construction site.

Definition
  1. Noun:
    • A person or thing that estimates: An estimator is someone who makes an approximate calculation or judgment of the value, number, quantity, or extent of something.
    • A statistical function: In statistics, an estimator is a rule or formula used to calculate an estimate of a given quantity based on observed data.
Usage Examples
  • Noun (Person):
    • The project manager hired a cost estimator to predict the budget.
    • She is an experienced estimator for the construction company.
  • Noun (Statistical Function):
    • The sample mean is a common estimator for the population mean.
    • Statisticians evaluated the efficiency of the new estimator.
Advanced Usage
  • "Unbiased estimator": In statistics, an estimator whose expected value equals the true value of the parameter being estimated.
    • The sample variance formula with (n-1) in the denominator is an unbiased estimator of the population variance.
  • "Consistent estimator": An estimator that converges in probability to the true parameter value as the sample size increases.
    • The law of large numbers shows that the sample mean is a consistent estimator.
Variants and Related Words
  • Estimate (n/v): An approximate calculation or judgment; to form such a calculation.
    • The contractor provided a written estimate for the repairs.
  • Estimation (n): The process of forming an estimate; a judgment or opinion.
    • In my estimation, the work will take three days.
Synonyms
  • Appraiser: One who sets a value on something, especially for official purposes.
  • Assessor: An official who calculates or estimates the value of something for taxation.
  • Calculator: One who computes or figures.
Related Phrases
  • Point estimator: A statistic that provides a single value as an estimate of a population parameter.
    • The sample proportion is a point estimator for the population proportion.
  • Interval estimator: A rule that specifies a range of plausible values for a parameter (e.g., a confidence interval).
    • A 95% confidence interval is an example of an interval estimator.
estimator

An estimator reviews a blueprint at a construction site.

Noun
  1. an expert at calculation (or at operating calculating machines)

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