Suppose That We Have a Qualitative Variable Month with Categories

question 71

Multiple Choice

Suppose that we have a qualitative variable Month with categories: January, February, etc. How many dummy variables are needed to describe Month?

• A) 12
• B) 11
• C) 10
• D) 9

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Definitions:

Active Transport

The migration of molecules from a lower concentration zone to a higher concentration zone across a cell's membrane, an action that requires energy.

Concentration Gradient

The gradual difference in the concentration of solutes in a solution between two regions, often leading to the movement of molecules along the gradient during diffusion.

Molecules

The smallest unit of a chemical compound that can exist while retaining the properties of that compound.

Osmosis

The movement of water molecules through a semi-permeable membrane from a region of lower solute concentration to one of higher concentration, aiming to equalize concentrations.