A point estimator is defined as:

A) a range of values that estimates an unknown population parameter.
B) a single value that estimates an unknown population parameter.
C) a range of values that estimates an unknown sample statistic.
D) a single value that estimates an unknown sample statistic.

Point Estimator

A point estimator is a statistic used to estimate the value of an unknown parameter of a population.

Population Parameter

A characteristic or measure that describes an aspect of an entire population, such as its mean, variance, or proportion.

Sample Statistic

A numerical measure that describes an attribute of a sample of a population.