Statistics

CDIFDataDescription::Classes::Statistics

Definition

Documentation

Original

Reference

cdi:Statistics

Definition

Statistics related to an instance variable within a data set.

Examples

The percentage of females from a demographic data set.

CDIF

Definition

A named bundle of one or more Statistic value objects for an instance variable, optionally weighted, optionally broken down by Category.

Scope

A named bundle of statistic value objects for an instance variable: typeOfStatistic, scale, content / numeric value, etc. Optionally weighted (by an InstanceVariable) and applies to one or more InstanceVariables.

Diagram

Inheritance

No generalization relationships.

Attributes

Name	Type	Multiplicity	Description
identifier	XsdAnyUri	[0..1]	Documentation Original Reference schema:identifier Definition The identifier property represents any kind of identifier for any kind of [[Thing]], such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See [background notes](/docs/datamodel.html#identifierBg) for more details. Scope Domain: Thing (https://schema.org/Thing). Range: PropertyValue (https://schema.org/PropertyValue), Text (https://schema.org/Text), URL (https://schema.org/URL). CDIF Definition Identifier for this enumerated (categorical) domain. Scope @id.
typeOfStatistic	string	[0..1]	Documentation Original Reference cdi:typeOfStatistic CDIF Definition Controlled-vocabulary entry naming the kind of statistic — e.g. mean, median, count, sum, stdDev. Scope cdi:typeOfStatistic - kind of statistic (mean, median, count, ...).
scale	string	[0..1]	Documentation Original Reference cdi:scale CDIF Definition cdi:scale - measurement scale.
typeOfNumericValue	string	[0..1]	Documentation Original Reference cdi:typeOfNumericValue CDIF Definition The type of numeric value carried in cdi:content — decimal, float, or double. Scope cdi:typeOfNumericValue - kind of numeric value.
content	string	[0..1]	Documentation Original Reference cdi:content CDIF Definition The value of the statistic expressed as a real number. Scope cdi:content - the measured value.
isWeighted	boolean	[0..1]	Documentation Original Reference cdi:isWeighted CDIF Definition True if the statistic was computed using a weighting variable. Scope cdi:isWeighted - whether the statistic is weighted.
computationBase	string	[0..1]	Documentation Original Reference cdi:computationBase CDIF Definition The cases included in determining the statistic — Total (all cases, valid and missing), ValidOnly (valid values only), MissingOnly (invalid cases only). Scope cdi:computationBase - basis of computation (e.g. population, sample).

Associations

Role	Target	Multiplicity	Kind
statistics	← Dataset	[0..*]	composition
appliesTo	→ InstanceVariable	[0..*]	association
hasWeight	→ InstanceVariable	[0..1]	association
has	→ CategoryStatistics	[0..*]	composition
has	→ Statistics	[0..*]	composition
isComposedOf	← CategoryStatistics	[1..*]	composition
has	← StatisticsCollection	[1..*]	composition