Questions and Answers
Which of the following is an example of a nominal (discrete) data type?
Animal = {cat, fish, dog, squirrel}
Which of the following is an example of an ordinal data type?
Temperature = {hot, mild, cool}
What is the main difference between nominal and ordinal data types?
Nominal data types have no relation or ordering among the values, while ordinal data types have values that can be ordered.
In the context of a university, which data type would be most appropriate for classifying students by the dorm they live in?
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Which of the following is an example of an interval data type?
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Study Notes
Data Types
- Nominal (discrete) data type: Example - Classifying students by the dorm they live in
- Ordinal data type: Example - Ranking students by their class position (1st, 2nd, 3rd, etc.)
- Main difference between nominal and ordinal data types: Ordinal data has a natural order or ranking, while nominal data does not
- Interval data type: Example - Temperature in Celsius or Fahrenheit, where the difference between any two consecutive values is equal
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