Data Types

Statistical

Nominal:

Names datum. E.g. Persons Name, sex, address, phone number

Ordinal:

positional when interval not exactly defined. E.G. Soldier rank; Captain is higher than lieutenant and lower than major but the distance is not defined precisely.

Interval:

Point on a scale with defined interval but no zero point. E.g.

Years of time. The year 2000 is exactly 1000 years after the year 1000 but is not twice as far from the beginning of time.

Ratio:

Point on a scale with defined interval and orgin. E.g. Temperature as degrees kelvin.

Also:

• Data Files

See also:

• http://www.cs.mcgill.ca/~cs251/OldCourses/1997/template.html a student effort at documenting and provideing examples from the class notes for the Data Structures class.

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