### Bar Graph

Transcript: https://people.richland.edu/james/lecture/m170/ch02-def.html Example Problem # 1 http://www.jpowered.com/graphs-and-charts/bar-chart-history.htm Horizontal Bar Graph Sources : Bar Graph Grouped Bar Graph Where can we use a bar graph? The organization of raw data in table form with classes and frequencies It is a really good way to show relative sizes: it is easy to see which types of movie are most liked, and which are least liked, at a glance. You can use bar graphs to show the relative sizes of many things, such as what type of car people have, how many customers a shop has on different days and so on. What is a Bar Graph? Many sources credit William Playfair (circa 1780) with inventing the bar chart, however a Frenchman, Nicole Oresme used a bar chart in a 14th century publication, "The Latitude of Forms", to plot velocity of a constantly accelerating object against time. Today bar charts and graphs are used everywhere and there are many forms and variations, but where invented them and where did they come from? A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights. Bar graphs can be shown with the dependent variable on the horizontal scale Types of Bar Graph a way of showing information about different sub-groups of the main categories. Pat and Nadine have been thinking about what to do during the Christmas Break Sample Data http://www.ncsu.edu/labwrite/res/gh/gh-bargraph.html Statistics : Frequency Distribution table History