When Selecting Explanatory Variables to Include in a Regression

question 27

Multiple Choice

When selecting explanatory variables to include in a regression,

• A)you should pick all observable variables available.
• B)you should pick all observable variables that are likely to have a meaningful impact on the dependent variable.
• C)ignore all variables that have t-statistics less than the critical value.
• D)ignore variables that have an R² less than 1.

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Definitions:

Not Otherwise Specified

A classification used in diagnosis when symptoms don't fully meet the criteria for a more specific disorder.

No Ovary Status

A medical or physiological condition indicating the absence of one or both ovaries.

Seventh Characters

Specific characters in medical coding that provide additional information about the patient's encounter or treatment.

Nonunion

The failure of the ends of a fractured bone to heal and join together, requiring medical intervention to correct.