Which of the Following Statements Is True

question 18

Multiple Choice

Which of the following statements is true?

• A)A truncated regression is a special case of a random sample selection.
• B)Nonrandom sample selection can arise in cases of cross-sectional and time series data, but not in the case of panel data.
• C)The Tobit regression model is based on endogenous sample selection.
• D)The censored regression model is based on nonrandom sample selection.

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Definitions:

Propanoic Acid

An organic carboxylic acid with the chemical formula C3H6O2, known for its foul odor and use in food preservatives.

Organic Halide

Organic compounds containing one or more halogen atoms (fluorine, chlorine, bromine, or iodine) attached to carbon atoms, widely used in organic synthesis and industrial applications.

Cyanide Ion

A negatively charged ion (CN-) known for its high toxicity; it is composed of one carbon atom triple-bonded to a nitrogen atom.

Nitrile Hydrolysis

Nitrile hydrolysis is a chemical reaction where a nitrile group (C≡N) is converted into a carboxylic acid or its derivatives through the addition of water (H2O).