Which of the Following Assumptions Is Required for Obtaining Unbiased

question 2

Multiple Choice

Which of the following assumptions is required for obtaining unbiased random effect estimators?

• A)The idiosyncratic errors are heteroskedastic.
• B)The unobserved effect is independent of all explanatory variables in all time periods.
• C)The idiosyncratic errors are serially correlated.
• D)The unobserved effect is correlated with the explanatory variables.

---

Definitions:

Oral Rehydration Solution

A fluid replacement solution used to prevent and treat dehydration, especially due to diarrhea.

Antidiarrheal Medications

Drugs used to alleviate or prevent diarrhea.

Acute Diarrhea

A sudden onset of frequent, loose, or watery bowel movements that may last a few days and can lead to dehydration.

Rotavirus

A highly contagious virus that causes gastroenteritis, particularly in infants and young children, leading to severe diarrhea and vomiting.