# Statistics - Discrete Variable

A discrete variable can only have values at specific values. See: Logical Data Modeling - Domain (Permitted value set)

A time can also be discrete. wiki/Discrete_time_and_continuous_time

Illustration Continuous vs Discrete: A Geneva drive is a gear mechanism that translates a continuous rotation into a discrete motion.

## Discrete and

### Continuous

Any-time you measure a variable that can only be measured in discrete values, you are using a variable that is not truly continuous.

## Distribution

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(Probability|Statistics) - Binomial Distribution

The binomial distribution is the discrete probability distribution of the number of successes in a sequence of n independent yes/no experiments, each of which yields success with probability p. The...
Color

A color is: a light wave in a range called the visual spectrum (that our eye see) the absence of light or mixed (achromatic colors (white, black, gray) in computer a data type that denotes a color....
Color - Name

The name of a color is known as the hue.
Data Mining - Step Function (piecewise constants)

Step functions, are another way of fitting non-linearities. (especially popular in epidemiology and biostatistics) Continuous variable are cut into discrete sub-ranges and fit a constant model in...
Dimensional Data Modeling - Descriptif Attribute (Dimensional Attribute)

A descriptif attribute is class attribute that describe a property or characteristic of a dimension. They are used to label, filter and/or group on. measures Typical attributes for a product dimension...
Number, Numeric, Quantity

A number is a mathematical object used to: count, label, and measure. Example: When we are interested in the total number of each species of tortoise, or how many individuals there are per square...
Statistics - (Discrete | Nominal | Category | Reference | Taxonomy | Class | Enumerated | Factor | Qualitative | Constant ) Data

(Nominal|Category|Reference) data carries contextual information. Mapping a category value in an attribute of an business entity instance requires often human judgementdiscretclassesnominal valueaggregation...
Statistics - (Probability) Density Function (PDF)

A probability density function (pdf) defines a distribution for continuous random variables whereas a Probability mass function (PMF) defines distribution for discrete random variables. The simplest...
Statistics - Continuous Variable

(Continuous|Quantitative) variable is a numerical variable that can be any of an infinite range of values. Any-time you measure a variable that can only be measured in discrete values, you are using...