Is age a quantitative continuous variable?

Summary. If you're asked whether age is a continuous or discrete variable in an Introductory Statistics class, the correct answer is technically continuous.

What type of quantitative variable is age?

In our medical example, age is an example of a quantitative variable because it can take on multiple numerical values. It also makes sense to think about it in numerical form; that is, a person can be 18 years old or 80 years old. Weight and height are also examples of quantitative variables.

Why is age not a continuous variable?

Mondal[1] suggests that age can be viewed as a discrete variable because it is commonly expressed as an integer in units of years with no decimal to indicate days and presumably, hours, minutes, and seconds.

Is age qualitative or quantitative?

Typically, a variable can describe either a quantitative or qualitative characteristic of an individual. Examples of quantitative characteristics are age, BMI, creatinine, and time from birth to death. Examples of qualitative characteristics are gender, race, genotype and vital status.

What is an example of continuous quantitative variable?

A second type of quantitative variable is called a continuous variable . This is a variable where the scale is continuous and not made up of discrete steps. For example, if playing a game of trivia, the length of time it takes a player to give an answer might be represented by a continuous variable.

Continuous vs Discrete Data

What type of data is age?

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. Age becomes ordinal data when there's some sort of order to it.

Is age a qualitative variable?

A qualitative variable is a variable that expresses a quality. Values do not have numerical meaning and cannot be ordered numerically. Height, mass, age, and shoe size would all be measured in terms of numbers. So, these categories do not contain qualitative data.

Is age categorical or continuous?

Age can be considered as a continuous, ratio variable.

What level of measurement is age?

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.

Is time quantitative discrete or continuous?

Time is a continuous variable. You could turn age into a discrete variable and then you could count it.

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.

How do you age a continuous variable?

Age is measured in units that, if precise enough, could be any number. Therefore the set they come from is infinite. For example, someone could be 22.32698457 years old or 22.32698459 years old. We could be infinitly accurate and use an infinite number of decimal places, therefore making age continuous.

What variable is age in research?

Age is looked at as a dimension along which behavior changes are to be traced, forming part of the definition of the dependent variable in developmental studies.

What variable is age and gender?

dependent variable. Independent variables included in the first step are demographic variables such as age, gender, marital status, and education, and in the next steps are eco- nomic related variables including employment status and self-rated economic condition.

Is age an interval or ratio?

Using the aforementioned definition, age is in a ratio scale. Age 0 = no age. A person who is 30 years old is half as old as someone who is 60, and twice as old as someone who is 15.

Which scale of measurement applies to age?

Age, money, and weight are common ratio scale variables. For example, if you are 50 years old and your child is 25 years old, you can accurately claim you are twice their age.

What type of variable is date of birth?

An interval-scale variable is measured on a scale of equally spaced units, but without a true zero point, such as date of birth.

Is age an interval variable?

Age is also a variable that can be measured on an interval scale. For example if A is 15 years old and B is 20 years old, it not only clear than B is older than A, but B is elder to A by 5 years.

Is age nominal ordinal discrete or continuous?

Age is, technically, continuous and ratio. A person's age does, after all, have a meaningful zero point (birth) and is continuous if you measure it precisely enough. It is meaningful to say that someone (or something) is 7.28 year old.

Is age quantitative discrete?

Is Age Discrete or Continuous? Technically speaking, age is a continuous variable because it can take on any value with any number of decimal places.

Is date categorical or continuous?

Are dates categorical or continuous? They could be treated as either. If you have daily data over the past 20 years, then, while it is technically not continuous (in that you can't be halfway between Jan 1 and Jan 2), it would be absurd to treat it as categorical.

Is age a control variable?

To account for other factors that are likely to influence the results, you also measure these control variables: Age. Marital status. Health.