In the Fixed Effects Model with Interaction, Assume That There

question 21

Multiple Choice

In the fixed effects model with interaction, assume that there are 5 levels of factor A, 4 levels of factor B, and 3 observations (replications) for each of the 20 combinations of levels of the two factors. Then the number of degrees of freedom of the interaction sum of squares (SSAB) is

• A) 60
• B) 20
• C) 15
• D) 12
• E) 59

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Definitions:

Stimulant

A compound that increases the activity within the body's physiological or nervous systems.

Nicotine

A stimulant and addictive substance found primarily in tobacco products.

Alcohol

A colorless, volatile liquid that is the active ingredient in drinks such as beer, wine, and spirits, and is also used in sterilization and as a fuel source.

Caffeine

A natural stimulant found in coffee, tea, chocolate, and certain medications that affects the central nervous system, enhancing alertness and reducing tiredness.