How does an interval estimator differ from a point estimator?
A)A point estimator may produce very biased results,while an interval estimator never has such a feature.
B)If a point estimator fails to produce an unbiased result,then an interval estimator secures such a result.
C)An interval estimator provides a range of values that always include the estimated population parameter.
D)An interval estimator provides a range of values for the estimated population parameter rather than a single value provided by a point estimator.

Question

Quizplus · Accepted Answer

A point estimator provides a single value estimate for the population parameter while an interval estimator provides a range of values that is likely to include the population parameter with a certain level of confidence. Therefore, choice D is the correct answer. Option A is incorrect as interval estimators can also produce biased results. Option B is incorrect as an interval estimator is not a solution for a biased point estimator. Option C is inaccurate as interval estimators do not always include the estimated population parameter, but they provide a range with a certain level of confidence.

How Does an Interval Estimator Differ from a Point Estimator