How Is the Efficiency of Estimators Defined

question 41

Multiple Choice

How is the efficiency of estimators defined?

• A)An estimator is efficient if its expected value equals the estimated population parameter.
• B)An efficient estimator approaches the estimated population parameter as the sample size grows larger.
• C)An estimator is efficient if it always gives the correct value of the estimated population parameter.
• D)An unbiased estimator is efficient if its standard error is lower than that of other estimators of the estimated population parameter.

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Definitions:

Numeric Ages

Ages or dates assigned to geological events or rock formations expressed in years, often determined through radiometric dating.

Magnetic Reversals

Occurrences where the Earth's magnetic field switches direction, swapping the magnetic north and south poles.

Numeric Ages

Refers to the actual number of years that have passed since a particular geological event or the formation of a rock.

Landslide

The sudden and rapid movement of a large amount of earth material, such as rock and soil, downslope due to gravity.