What Is Not One of the Guidelines for Including/excluding Variables

question 12

Multiple Choice

What is not one of the guidelines for including/excluding variables in a regression equation?

• A) Look at the t-value and associated p-value.
• B) Check whether the t-value is less than or greater than 1.0.
• C) The variables are logically related to one another.
• D) Use economic or physical theory to make the decision.
• E) All of these choices are guidelines.

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Definitions:

Margin of Error

An indicator of the precision of an estimate, representing the maximum likely difference between the observed sample statistic and the true value of the population parameter.

Confidence Level

The probability, expressed as a percentage, that the result of a statistical test will fall within the specified confidence interval.

Plus Four Estimate

A technique used in calculating confidence intervals for proportions where four is added to the number of successes and failures each before calculating the proportion.

Autoxidation

A process involving the oxidation of substances by atmospheric oxygen, often leading to gradual degradation.