WordNet

a chart with bars whose lengths are proportional to quantities (同)bar_graph
(meteorology) a unit of pressure equal to a million dynes per square centimeter; "unfortunately some writers have used bar for one dyne per square centimeter"
secure with, or as if with, bars; "He barred the door"
(law) a railing that encloses the part of the courtroom where the judges and lawyers sit and the case is tried; "spectators were not allowed past the bar"
a counter where you can obtain food or drink; "he bought a hot dog and a coke at the bar"
a heating element in an electric fire; "an electric fire with three bars"
a horizontal rod that serves as a support for gymnasts as they perform exercises
a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon; "there were bars in the windows to prevent escape"
an obstruction (usually metal) placed at the top of a goal; "it was an excellent kick but the ball hit the bar"
a submerged (or partly submerged) ridge in a river or along a shore; "the boat ran aground on a submerged bar in the river"
prevent from entering; keep out; "He was barred from membership in the club" (同)debar, exclude
burn to charcoal; "Without a drenching rain, the forest fire will char everything" (同)coal
burn slightly and superficially so as to affect color; "The cook blackened the chicken breast"; "The fire charred the ceiling above the mantelpiece"; "the flames scorched the ceiling" (同)blacken, sear, scorch
a charred substance
any of several small trout-like fish of the genus Salvelinus (同)charr
plan in detail; "Bush is charting a course to destroy Saddam Hussein"
a map designed to assist navigation by air or sea
a visual display of information
make a chart of; "chart the territory"
an ornamental caparison for a horse
a lyric poet

PrepTutorEJDIC

(木または金属の)『棒』;棒状の物 / 横木,(戸・とびらなどの)かんぬき,横さん / (一般に)(…対する)『障害』《+『to』(『against』)+『名』》 / (また『sand bar』)(河口・港口の)砂州 / (光・色などの)線条,しま,帯 / (酒場・旅館などの)酒を出すカウンター;バー,酒場;簡易食堂 / 《the~》(法廷の裁判官席・被告席・弁護士席と一般席との間の)仕切り;《比諭(ひゆ)的に》法廷 / 《集合的に》弁護士団,法曹界;弁護士[業]: / (楽譜の小節を分ける)縦線;小節 / 〈戸・門など〉‘に'『かんぬきをさす』 / 〈道・通行など〉'を'『妨げる』,はばむ / 《通例受動態で》…‘に'線(筋)をつける / …'を'禁じる(forbid) / (…から)…'を'除外する,締め出す《+『名』+『from』(『out of』)+『名』》;(…に)…'を'とじ込める《+『名』+『in』+『名』》: / …の除いて(except)
…'を'焦がす / (焼いて)…'を'炭にする / こげる
(時間ぎめや日雇いで)〈婦人が〉雑役をする
=chatwoman
=tea
『海図』,水路図 / 『図表』 / …'を'図表(海図)に作る / 《話》〈行動など〉'を'計画する(plan)
ケルト族の吟遊詩人 / (一般に)詩人

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/21 09:37:50」(JST)

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Example of a bar chart.

A bar chart or bar graph is a chart that presents Grouped data with rectangular bars with lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column bar chart.

A bar graph is a chart that uses either horizontal or vertical bars to show comparisons among categories. One axis of the chart shows the specific categories being compared, and the other axis represents a discrete value. Some bar graphs present bars clustered in groups of more than one (grouped bar graphs), and others show the bars divided into subparts to show cumulative effect (stacked bar graphs).

History

Bar chart by William Playfair, 1786

The first bar graph appeared in the 1786 book The Commercial and Political Atlas, by William Playfair (1759-1823). Playfair was a pioneer in the use of graphical displays and wrote extensively about them.^{[citation needed]}

This bar chart by William Playfair from 1786 showed the "Exports and Imports of Scotland to and from different parts for one Year from Christmas 1780 to Christmas 1781."

Usage

Bar charts have a discrete range. Bar charts are usually scaled so that all the data can fit on the chart. Bars on the chart may be arranged in any order. Bar charts arranged from highest to lowest incidence are called Pareto charts. Normally, bars showing frequency will be arranged in chronological (time) sequence. Grouped bar graph usually present the information in the same order in each grouping. Stacked bar graphs present the information in the same sequence on each bar.

Bar graphs charts provide a visual presentation of categorical data.^[1] Categorical data is a grouping of data into discrete groups, such as months of the year, age group, shoe sizes, and animals. These categories are usually qualitative. In a column bar chart, the categories appear along the horizontal axis; the height of the bar corresponds to the value of each category.

Bar graphs can also be used for more complex comparisons of data with grouped bar charts and stacked bar charts.^[1] In a grouped bar chart, for each categorical group there are two or more bars. These bars are color-coded to represent a particular grouping. For example, a business owner with two stores might make a grouped bar chart with different colored bars to represent each store: the horizontal axis would show the months of the year and the vertical axis would show the revenue. Alternatively, a stacked bar chart could be used. The stacked bar chart stacks bars that represent different groups on top of each other. The height of the resulting bar shows the combined result of the groups. However, stacked bar charts are not suited to datasets where some groups have negative values. In such cases, grouped bar charts are preferable.

References

^ ^a ^b Kelley, W. M.; Donnelly, R. A. (2009) The Humongous Book of Statistics Problems. New York, NY: Alpha Books ISBN 1592578659

External links

Directory of graph software and online tools (many can handle bar charts)
Create A Graph. Free online graph creation tool at the website for the National Center for Education Statistics (NCES)
Different types of Bar charts

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