In Practice, You May Want to Use the OLS Estimator

question 11

Multiple Choice

In practice, you may want to use the OLS estimator instead of the WLS because

• A)heteroskedasticity is seldom a realistic problem
• B)OLS is easier to calculate
• C)heteroskedasticity robust standard errors can be calculated
• D)the functional form of the conditional variance function is rarely known

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Definitions:

Pharynx

The muscular tube that connects the mouth and nasal passages with the esophagus.

Tidal Volume

The amount of air that is inhaled or exhaled in a normal breath under resting conditions, important in respiratory physiology.

Inspiratory Capacity

The maximum amount of air that can be inhaled after a normal exhalation, used in assessing lung function.

Inspiratory Reserve Volume

The extra volume of air that can be breathed in beyond a regular breath, adding to the overall lung capacity.