Which of the Following Regression Models Does Not Include an Interaction

question 38

Multiple Choice

Which of the following regression models does not include an interaction variable?

• A) y = β₀ + β₁x + β₂xd + ε
• B) y = β₀ + β₁x + β₂d + ε
• C) y = β₀ + β₁d + β₂xd + ε
• D) y = β₀ + β₁x + β₂d + β₃xd + ε

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Definitions:

Consistency Check

In a database, compares the values of data in two or more fields to see if those values are reasonable.

Normalization

A process to ensure data is organized most efficiently in a database.

Data Centralization

When data is maintained in only one file.

Relational Algebra

The use of English-like expressions that have variables and operations, much like algebraic equations, to extract data from databases using Structured Query Language.