# Difference between revisions of "Histogram versus Bar Plot"

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== Histogram versus Bar Plot == | == Histogram versus Bar Plot == | ||

− | Histograms are visualizations of frequency (probability) distributions of | + | Histograms are visualizations of frequency (probability) distributions of suitable binned [[Numerical Variable | numerical variables]]. Bar Plots are instead visualizations of the frequency of occurrence of the different values of [[Categorical Variable]] |

+ | |||

+ | While superficially the same, histograms and bar plots have quite different semantics: | ||

+ | * In a histogram, the number of bins is variable but their ordering is not | ||

+ | * In categorical variable bare plot the number of bars is given but their ordering is not | ||

+ | |||

+ | Many of the probabilistic concepts that one can read from a histogram (the shape and properties of the distribution) are not meaningful for a bar plot. | ||

[[Category:X versus Y]] | [[Category:X versus Y]] | ||

[[Category:Visualization]] | [[Category:Visualization]] |

## Latest revision as of 20:16, 10 September 2019

## Histogram versus Bar Plot

Histograms are visualizations of frequency (probability) distributions of suitable binned numerical variables. Bar Plots are instead visualizations of the frequency of occurrence of the different values of Categorical Variable

While superficially the same, histograms and bar plots have quite different semantics:

- In a histogram, the number of bins is variable but their ordering is not
- In categorical variable bare plot the number of bars is given but their ordering is not

Many of the probabilistic concepts that one can read from a histogram (the shape and properties of the distribution) are not meaningful for a bar plot.