Is Age Nominal or Ordinal Data? **Age can be both nominal and ordinal data depending on the question types**. I.e “How old are you” is used to collect nominal data while “Are you the firstborn or What position are you in your family” is used to collect ordinal data.

## Are ages nominal or ordinal?

Generally speaking, age is an **ordinal variable** since the number assigned to a person’s age is meaningful and not simple an arbitrarily chosen number/marker.

## What type of variable is age group?

Age is a key **demographic variable**, frequently recorded in survey data as part of a broader set of demographic variables such as education, income, race, ethnicity, and gender.

## What level of measurement is age group?

The short answer: Age is considered a **ratio variable** because it has a “true zero” value. It’s possible for an individual to be zero years old (a newborn) and we can say that the difference between 0 years and 10 years is the same as the difference between 10 years and 20 years.

## Are age groups categorical or quantitative?

One question that students often have is: Is age considered a qualitative or quantitative variable? The short answer: Age is a **quantitative variable** because it represents a measurable quantity.

## Should age be a categorical variable?

**Age as a quantitative variable contains more information than as a categorical variable**. If you were to represent age as a categorical variable, then you are doing away with the natural ordering of the ages you’d have by leaving it as a quantitative variable.

## Is age an interval data?

We can first distinguish between categoric and interval-level data. Interval-level variables are continuous, meaning that each value of the variable is one increment larger than the previous and one smaller than the next value. **Age, if measured in years, is a good example**; each increment is one year.

## Is age an independent variable?

It is a variable that stands alone and isn’t changed by the other variables you are trying to measure. For example, **someone’s age might be an independent variable**. Other factors (such as what they eat, how much they go to school, how much television they watch) aren’t going to change a person’s age.

### References:

- https://allthingsstatistics.com/miscellaneous/is-age-nominal-or-ordinal/
- https://methods.sagepub.com/dataset/howtoguide/age-in-ess-2016-spss
- https://www.statology.org/is-age-interval-or-ratio/
- https://www.statology.org/is-age-qualitative-or-quantitative/
- https://stats.stackexchange.com/questions/413193/is-age-categorical-or-quantitative-or-both
- https://www.icpsr.umich.edu/web/pages/instructors/setups/analysis.html
- https://nces.ed.gov/nceskids/help/user_guide/graph/variables.asp