estimator

An estimator is a method or rule used to make an educated guess about a large or unknown quantity based on limited information or sample data. For example, if you want to know the average height of all students in a school, measuring a few students and calculating their average provides an estimator for the entire school's average height. It helps us infer or predict something about a broader population by analyzing smaller, manageable samples, relying on statistical techniques to ensure the estimate is as accurate and reliable as possible.