Editing Chart (section)

=== Common charts ===
Four of the most common charts are:

<gallery class="skin-invert-image">
File:Black cherry tree histogram.svg|[[Histogram]]
File:Försäljningsstatistik för blanddrycker.png|[[Bar chart]]
File:ActionnariatLibe2007-fr.svg|[[Pie chart]]
File:US Trade Balance from 1960.svg|[[Line chart]]

</gallery>

This gallery shows:

* A [[histogram]] consists of tabular frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to the frequency of the observations in the interval; first introduced by Karl Pearson.<ref name="pearson">{{Cite journal| last1 = Pearson | first1 = K. |author-link=Karl Pearson| title = Contributions to the Mathematical Theory of Evolution. II. Skew Variation in Homogeneous Material| journal = Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences| volume = 186| pages = 343–414| year = 1895| doi = 10.1098/rsta.1895.0010|bibcode = 1895RSPTA.186..343P | url = https://zenodo.org/record/1432104| doi-access = free}}</ref>
* A [[bar chart]] is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. The first known bar charts are usually attributed to Nicole Oresme, Joseph Priestley, and William Playfair.<ref>{{cite web|title=First Ever Bar Charts Created in 14th Century|date=2 June 2015 |url=http://www.anychart.com/blog/2015/06/02/first-bar-chart-in-history/|publisher=AnyChart|access-date=9 February 2016}}</ref>
* A [[pie chart]] shows percentage values as a slice of a pie; first introduced by William Playfair.<ref>{{cite web|url=http://www.jpowered.com/graphs-and-charts/pie-chart-history.htm|title=History of Pie Charts|publisher=JPowered|access-date=9 February 2016|archive-url=https://web.archive.org/web/20160115164419/http://jpowered.com/graphs-and-charts/pie-chart-history.htm|archive-date=15 January 2016|url-status=dead}}</ref>
* A [[line chart]] is a two-dimensional scatterplot of ordered observations where the observations are connected following their order. The first known line charts are usually credited to Francis Hauksbee, Nicolaus Samuel Cruquius, Johann Heinrich Lambert and William Playfair.<ref>{{cite web|author=Michael Friendly|year=2008|url=http://www.math.yorku.ca/SCS/Gallery/milestone/milestone.pdf|title=Milestones in the history of thematic cartography, statistical graphics, and data visualization|pages=13–14|author-link=Michael Friendly}}</ref>
Other common charts are:

<gallery class="skin-invert-image">
File:BTTFTimelines.png|[[Timeline]] chart
File:Organigram of the United States Department of the Navy.gif|[[Organizational chart]]
File:ABB.svg|Tree chart
File:Flussdiagramm (Programmablaufplan).png|[[Flow chart]]
File:MLB slugging history.svg|[[Area chart]]
File:Cartlinearlarge.png|[[Cartogram]]
File:Autosomal Dominant Pedigree Chart.svg|[[Pedigree chart]]
File:Sunburst Chart.jpg|[[Radial tree]]
</gallery>