In a Regression Model Such as Y = β₀

question 86

Multiple Choice

In a regression model such as y = β₀ + β₁X₁ + β₂X₂ + ε,if changes in x₁ and x₂ happen simultaneously,the model is said to be affected by:

• A)specification bias.
• B)heteroscedasticity.
• C)multicollinearity.
• D)autocorrelation.

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Definitions:

Postcondition Comments

Comments placed in code to specify the state or the expected outcome after a certain block of code has been executed.

Postconditions

Conditions that must be true after the execution of a segment of code or program, used in formal methods to verify correctness.

Preprocessor Directives

Instructions given to the C or C++ compiler's preprocessor, affecting the compilation process before actual compilation starts.

Named Constants

Variables with assigned values that cannot be altered during the execution of a program, used for readability and ease of maintenance.