What type of variable is BMI?

This categorized BMI is an example of an ordinal categorical variable. Categorical variables are sometimes called qualitative variables, but in this course we'll use the term “categorical.”

Is BMI a discrete variable?

Discrete quantitative variables can take on only a countable number of values, there are gaps between the possible choices. These are usually count variables of some kind. In our set above, blood pressure measurements and Body Mass Index (or BMI) would be clearly continuous.

Is BMI interval or ordinal?

For example, Body Mass Index (BMI) is typically measured at an interval-level such as 23.4.

Is BMI an interval variable?

[23] Counts are interval scale measurements, such as counts of publications or citations, years of education, intelligence (IQ test score), BMI, and age (years). The ratio scales are metric scales and the most informative scale.

What kind of variable is body weight?

For example, because weight is a ratio variable, a weight of 4 grams is twice as heavy as a weight of 2 grams.

Variables and Types of Variables | Statistics Tutorial | MarinStatsLectures

Is BMI a ratio?

BMI is an estimate of body fat and a good measure of your patients' risk for diseases that can occur with overweight and obesity. For adults, a healthy weight is defined as the appropriate body weight in relation to height. This ratio of weight to height is known as the body mass index (BMI).

Is weight nominal or ordinal?

Ratio scales of measurement include properties from all four scales of measurement. The data is nominal and defined by an identity, can be classified in order, contains intervals and can be broken down into exact value. Weight, height and distance are all examples of ratio variables.

Is weight an interval or ratio?

Weight is measured on the ratio scale. 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.

Is weight a continuous variable?

Continuous variables can take on almost any numeric value and can be meaningfully divided into smaller increments, including fractional and decimal values. You often measure a continuous variable on a scale. For example, when you measure height, weight, and temperature, you have continuous data.

What is quantitative variable?

Quantitative variables are any variables where the data represent amounts (e.g. height, weight, or age). Categorical variables are any variables where the data represent groups. This includes rankings (e.g. finishing places in a race), classifications (e.g. brands of cereal), and binary outcomes (e.g. coin flips).

Is height an interval or ratio?

Physical characteristics of persons and objects can be measured with ratio scales, and, thus, height and weight are examples of ratio measurement.

What level of measurement is weight?

An example of the ratio level of measurement is weight.

What is ordinal and nominal?

Nominal: the data can only be categorized. Ordinal: the data can be categorized and ranked. Interval: the data can be categorized and ranked, and evenly spaced. Ratio: the data can be categorized, ranked, evenly spaced and has a natural zero.

Is BMI categorical data?

This categorized BMI is an example of an ordinal categorical variable. Categorical variables are sometimes called qualitative variables, but in this course we'll use the term “categorical.”

What is an example of a qualitative variable?

A qualitative variable, also called a categorical variable, is a variable that isn't numerical. It describes data that fits into categories. For example: Eye colors (variables include: blue, green, brown, hazel).

Is weight discrete or continuous variable?

Continuous data is data that can take any value. Height, weight, temperature and length are all examples of continuous data.

Is weight a continuous or categorical variable?

So it is obvious that weight is a continuous variable as it can be quantified with decimal precision;like 10.2 kg and 3.0122 kg.

Is weight a discrete or continuous variable explain?

Continuous random variables have numeric values that can be any number in an interval. For example, the (exact) weight of a person is a continuous random variable. Foot length is also a continuous random variable. Continuous random variables are often measurements, such as weight or length.

What are nominal and ordinal variables?

There are two types of categorical variable, nominal and ordinal. A nominal variable has no intrinsic ordering to its categories. For example, gender is a categorical variable having two categories (male and female) with no intrinsic ordering to the categories. An ordinal variable has a clear ordering.

What is interval data examples?

Examples of interval data includes temperature (in Celsius or Fahrenheit), mark grading, IQ test and CGPA. These interval data examples are measured with equal intervals in their respective scales. Interval data are often used for statistical research, school grading, scientific studies and probability.

Is population a ratio or interval?

Length, area, and population are examples of ratio scales.

Is IQ an interval or ratio?

An IQ (Intelligence Quotient) score from a standardized test of intelligences is a good example of an interval scale score.

What are ordinal scales?

The Ordinal scale includes statistical data type where variables are in order or rank but without a degree of difference between categories. The ordinal scale contains qualitative data; 'ordinal' meaning 'order'. It places variables in order/rank, only permitting to measure the value as higher or lower in scale.

How is BMI measured?

The body mass index (BMI) is a measure that uses your height and weight to work out if your weight is healthy. The BMI calculation divides an adult's weight in kilograms by their height in metres squared. For example, A BMI of 25 means 25kg/m2.