What is an estimator in statistics?
Understand the Problem
The question is asking for the definition and explanation of an estimator in the context of statistics. It seeks to understand what an estimator is, its purpose, and how it is used in statistical analysis.
Answer
An estimator is a rule for calculating an estimate from observed data.
An estimator is a rule or formula for calculating an estimate of a given quantity based on observed data.
Answer for screen readers
An estimator is a rule or formula for calculating an estimate of a given quantity based on observed data.
More Information
An estimator is commonly used in statistics to approximate the value of unknown parameters. For instance, the sample mean is often used as an estimator for the population mean.
Tips
One common mistake is confusing the estimator with the estimate. The estimator is the rule or formula, while the estimate is the result obtained from applying this rule to data.
Sources
- Estimator: Simple Definition and Examples - Statistics How To - statisticshowto.com
- Estimator - StatLect - statlect.com
- Estimator (Statistics) Definition - DeepAI - deepai.org
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