Statistics Definitions > Nominal Ordinal Interval Ratio
Nominal Ordinal Interval Ratio: Examples
Nominal: nominal is from the Latin nomalis, which means “pertaining to names”. It’s another name for a category.
- Gender: Male, Female, Other.
- Hair Color: Brown, Black, Blonde, Red, Other.
- Type of living accommodation: House, Apartment, Trailer, Other.
- Genotype: Bb, bb, BB, bB.
- Religious preference: Buddhist, Mormon, Muslim, Jewish, Christian, Other.
Ordinal: means in order. Includes “First,” “second” and “ninety ninth.”
- High school class ranking: 1st, 9th, 87th…
- Socioeconomic status: poor, middle class, rich.
- The Likert Scale: strongly disagree, disagree, neutral, agree, strongly agree.
- Level of Agreement: yes, maybe, no.
- Time of Day: dawn, morning, noon, afternoon, evening, night.
- Political Orientation: left, center, right.
Interval: has values of equal intervals that mean something. For example, a thermometer might have intervals of ten degrees.
- Celsius Temperature.
- Fahrenheit Temperature.
- IQ (intelligence scale).
- SAT scores.
- Time on a clock with hands.
Ratio: exactly the same as the interval scale except that the zero on the scale means: does not exist. For example, a weight of zero doesn’t exist; an age of zero doesn’t exist. On the other hand, temperature is not a ratio scale, because zero exists (i.e. zero on the Celsius scale is just the freezing point; it doesn’t mean that water ceases to exist).
- Sales Figures.
- Ruler measurements.
- Income earned in a week.
- Years of education.
- Number of children.
*It could be argued that age isn’t on the ratio scale, as age 0 is culturally determined. For example, Chinese people also have a nominal age, which is tricky to calculate. See: Why Chinese People Have a Nominal Age.
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