If the Errors Are Heteroskedastic, Then

question 2

Multiple Choice

If the errors are heteroskedastic, then

• A)the OLS estimator is still BLUE as long as the regressors are nonrandom.
• B)the usual formula cannot be used for the OLS estimator.
• C)your model becomes overidentified.
• D)the OLS estimator is not BLUE.

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Definitions:

Irregular Heart Rate

A condition where the heart beats too fast, too slow, or with an erratic pattern, not following the normal rhythm.

Beats Per Minute

A unit of measure used to quantify the tempo of music or the heart rate, indicating the number of beats occurring in one minute.

Acid-Fast Bacillus

A type of bacterium that is resistant to decolorization by acids during staining procedures, commonly associated with tuberculosis.

Sputum Specimen

A sample of mucus from the lungs, collected for diagnostic testing, often used to detect infections or other pulmonary conditions.