14+Data+Displays

Sections 1-9 and 2-5 Danielle Bonnett Kristen Skelton Steven Gralow Helpful Website for Line Graphs: [] __Example:__ The pie chart below shows the ingredients used to make a sausage and mushroom pizza. The fraction of each ingredient by weight is shown in the pie chart below. We see that half of the pizza's weight comes from the crust. The mushrooms make up the smallest amount of the pizza by weight, since the slice corresponding to the mushrooms is smallest. Note that the sum of the decimal sizes of each slice is equal to 1 (the "whole" pizza) Question: Use the graph that shows the time of year people prefer to buy books. 1) Suppose the manager of a bookstore has determined that she sells about 15,000 books a year. Approximately how many books should she expect to sell during the summer? Answer: 1) About 2250
 * __PIE GRAPHS:__**
 * Shows data as parts of a whole set of data

Helpful Links for Pie Graphs: [] [|http://www.tpub.com/content/draftsman/14066/css/14066_109.htm]


 * __BAR GRAPH:__**


 * Used to compare different categories of data
 * A bar graph can be used to give a visual representation of the relationship of data that has been collected:

The graph above shows the number of students and their grade in their math class. As you can see, there are different numbers of grades, therefore a bar graph is used. It is made up of a vertical and a horizontal axis and bars that can run vertically or horizontally.

Questions: 1) Which grade was the most popular recieved by the students? 2) How many total students were there that took the test?

Solutions: 1) B 2) 40 students

Helpful Website for Bar Graphs: []