1
How To...Draw a Simple Bar Chart in Excel 2010
::2010/09/23::
2
IELTS task 1 writing bar graph example with structure part 1 of 2
::2012/01/02::
3
How To Make and Use a Bar Graph
::2010/10/10::
4
Excel 2010 Training - Bar Chart Comparisons or Differences
::2013/02/21::
5
IELTS Writing Achieve 6.5 - Example 1 Bar Chart, Line Graph
::2008/06/16::
6
How to Create a Bar Chart in SPSS - Bar Graph
::2013/02/16::
7
Developing a Basic Gantt Chart / Bar Chart Using Critical Path Method (CPM) -
::2011/11/05::
8
Create a Stacked Column or Bar Chart
::2012/02/19::
9
How to create bar chart with error bars (multiple variables)
::2013/10/10::
10
QlikView Charting | Creating Bar Chart in QlikView
::2013/08/17::
11
Microsoft word: how to make a bar chart
::2012/01/27::
12
How to create a side by side bar chart in Excel
::2013/06/10::
13
How to create beautiful bar graph | column chart in microsoft powerpoint 2010
::2013/09/08::
14
Java prog#66. How to add a Jfreechart Bar chart to a panel in netbeans java
::2012/06/25::
15
Mahavastu Bar Chart Technique - How to Judge Energy Fields of a particular Space.
::2013/05/06::
16
SPSS for newbies: How to create an error bar chart
::2012/09/21::
17
Python Bar Chart Tutorial Part 1
::2013/06/11::
18
QlikView | Stacked Bar Chart
::2013/09/22::
19
Designing Page 1 of Report - Bar Chart
::2013/09/16::
20
How To... Display Two Measures in a Bar-Line Chart in Excel 2010
::2012/04/03::
21
How To Make a Bar Graph in Microsoft Excel 2010 - For Beginners
::2011/11/20::
22
Minitab Tutorials - Bar Chart
::2011/11/06::
23
02 Grouped Bar Chart with Error Bars 群組柱狀圖及誤差線
::2013/05/16::
24
Video 12 - Multiple Variable Bar Chart in SPSS and Excel
::2014/04/15::
25
Clustered bar/line chart of means (repeated measures) in SPSS
::2013/05/07::
26
SPSS for newbies: Clustered bar chart for crosstabs
::2012/09/10::
27
Stacked Bar Chart
::2013/03/05::
28
How To... Create a Stacked Chart in Excel 2010
::2011/12/22::
29
IELTS bar chart
::2009/12/24::
30
Welcome to the New Barchart.com!
::2010/04/06::
31
Create a Simple Bar Chart Using SAS
::2014/02/25::
32
::2012/02/10::
33
Bar Chart Introduction - Open High Low Close (OHLC), Range, Uptrends, Downtrends
::2012/06/05::
34
Stock Market Education | Bar Chart vs Candlestick Charts
::2014/02/14::
35
How to Create a Combination Bar & Line Chart in Excel 2007
::2013/01/10::
36
XBar-R Control Charts
::2012/05/30::
37
Bar Chart for Categorical Data in Minitab
::2013/06/27::
38
Implement Comparison Report with Bar Chart using ASP.NET.
::2013/12/11::
39
Excel 2013 tutorial: Using column and bar charts | lynda.com
::2013/08/16::
40
Describing IELTS Graphs: 2 Models for a Bar Chart (Insurit Insurance Company)
::2011/04/20::
41
Creating a Bar Chart in SPSS with APA Styling
::2009/02/03::
42
How-to Make Bar Chart with Vertical Lines Tutorial
::2011/08/31::
43
Tony Garcia's presentation on how to build a bar chart in D3 [Part 1/2]
::2013/05/22::
44
Excel Dynamic Chart #16: Dynamic Average Hurdle Line for Bar Chart. Scatter and Bar Chart Together.
::2009/12/16::
45
How to Make a Bar Graph in Excel
::2009/06/30::
46
Episode #23 Advanced Designer Chart-Graph Training Chapter #5 Bar Charts
::2012/04/10::
47
QlikView | Trellis Bar Chart
::2013/11/25::
48
Pivot Point Reversal Bar Chart Pattern
::2012/06/09::
49
Highline Excel 2013 Class Video 48: Conditional Formatting: Bar Chart with Data Labels
::2013/12/22::
50
Create a Column Chart in Excel
::2010/05/04::
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Example of a bar chart, with 'Country' as the discrete data set.

A bar chart or bar graph is a chart 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.

## Description

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 cumulate effect (stacked bar graphs). Bar graph can be drawn horizontally or vertically.

## Use

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.

A bar graph is very useful for recording discrete data. Bar graphs also look a lot like a histogram, which record continuous data. The difference is not that bar graphs (can) have spaces between columns and histograms don't (have to) have spaces, the difference is the type of data that each represent. For more on the difference, please see this description from shodor.org

## History

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]

## References

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