If a Qualitative Variable Has "C" Categories, How Many Dummy

question 50

Multiple Choice

If a qualitative variable has "c" categories, how many dummy variables must be created and used in the regression analysis?

• A)c - 1
• B)c
• C)c + 1
• D)c - 2
• E)4 + c

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Definitions:

Records Or Documents

Stored information or evidence, in physical or digital form, containing data or knowledge.

Random Assignment

A technique for assigning individuals to different groups in an experiment using randomization, to ensure that every participant has an equal chance of being placed in any group.

Cause-effect Inferences

Logical deductions that suggest a relationship where one event (the cause) leads to the occurrence of another event (the effect).

External Validity

The extent to which research findings can be generalized to settings or groups outside the study.