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- Index_of_dispersion abstract "In probability theory and statistics, the index of dispersion, dispersion index, coefficient of dispersion, or variance-to-mean ratio (VMR), like the coefficient of variation, is a normalized measure of the dispersion of a probability distribution: it is a measure used to quantify whether a set of observed occurrences are clustered or dispersed compared to a standard statistical model.It is defined as the ratio of the variance to the mean ,It is also known as the Fano factor, though this term is sometimes reserved for windowed data (the mean and variance are computed over a subpopulation), where the index of dispersion is the special case where the window is infinite. Windowing data is frequently done: the VMR is frequently computed over various intervals in time or small regions in space, which may be called "windows", and the resulting statistic called the Fano factor.It is only defined when the mean is non-zero, and is generally only used for positive statistics, such as count data or time between events, or where the underlying distribution is assumed to be the exponential distribution or Poisson distribution.".
- Index_of_dispersion wikiPageID "16693606".
- Index_of_dispersion wikiPageRevisionID "577899194".
- Index_of_dispersion hasPhotoCollection Index_of_dispersion.
- Index_of_dispersion subject Category:Data_analysis.
- Index_of_dispersion subject Category:Point_processes.
- Index_of_dispersion subject Category:Statistical_deviation_and_dispersion.
- Index_of_dispersion subject Category:Statistical_randomness.
- Index_of_dispersion subject Category:Statistical_ratios.
- Index_of_dispersion subject Category:Statistical_terminology.
- Index_of_dispersion type Abstraction100002137.
- Index_of_dispersion type Act100030358.
- Index_of_dispersion type Activity100407535.
- Index_of_dispersion type Event100029378.
- Index_of_dispersion type MagnitudeRelation113815152.
- Index_of_dispersion type PointProcesses.
- Index_of_dispersion type Procedure101023820.
- Index_of_dispersion type PsychologicalFeature100023100.
- Index_of_dispersion type Ratio113819207.
- Index_of_dispersion type Relation100031921.
- Index_of_dispersion type StatisticalRatios.
- Index_of_dispersion type YagoPermanentlyLocatedEntity.
- Index_of_dispersion comment "In probability theory and statistics, the index of dispersion, dispersion index, coefficient of dispersion, or variance-to-mean ratio (VMR), like the coefficient of variation, is a normalized measure of the dispersion of a probability distribution: it is a measure used to quantify whether a set of observed occurrences are clustered or dispersed compared to a standard statistical model.It is defined as the ratio of the variance to the mean ,It is also known as the Fano factor, though this term is sometimes reserved for windowed data (the mean and variance are computed over a subpopulation), where the index of dispersion is the special case where the window is infinite. ".
- Index_of_dispersion label "Index of dispersion".
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- Index_of_dispersion sameAs Q2158178.
- Index_of_dispersion sameAs Q2158178.
- Index_of_dispersion sameAs Index_of_dispersion.
- Index_of_dispersion wasDerivedFrom Index_of_dispersion?oldid=577899194.
- Index_of_dispersion isPrimaryTopicOf Index_of_dispersion.