Misleading Graphs
Team C
Introduction to Statistics—QNT/273
February 7, 2011
Jeffrey McDonough

Misleading Graphs
“Graphs give a visual representation that enables readers to analyze and interpret data more easily than they could simply by looking at numbers. However, inappropriately drawn graphs can misrepresent the data and lead the reader to false conclusions” (Bluman, 2009, p.76). Some methods used by graph makers to mislead consumers are truncated axis starting points and using two dimensional pictures rather than simple bars or lines. Problems

The graph we chose as our project is flawed in many ways. The chart has no title, no scale on the vertical axis, and no labels for the horizontal axis. There is no way to determine what type of data is being represented other than “singles” of some kind being sold. Whether these are single units of something, single rooms rented, Kraft singles cheese slices, or something else entirely is uncertain. The missing labels on the horizontal axis also deprive the viewer from knowing exactly how the data is being tracked. The columns certainly look like they represent years but it could be something else entirely. Another large issue with this graph is that the two dimensional viewpoint makes it seem as if the 1995 column is far taller than the rest of the data when in fact it is the same height as the 1997 column. Effect on Users

When the graph is misleading, it becomes hard for the reader to accurately understand what the graph is trying to show. The largest problem with this graph is the lack of information provided about what is being studied. There is no title provided to give the reader a general idea of what information is being shown. The graph fails to show the frequency amount of the “number of singles being sold”, or even what the single is exactly. The fact that there is little labeling on the vertical axis and none on the horizontal axis can be misleading and could cause the users to think that the...

...V. Adamchik
1
Graph Theory
Victor Adamchik Fall of 2005
Plan
1. Basic Vocabulary 2. Regular graph 3. Connectivity 4. Representing Graphs
Introduction
A.Aho and J.Ulman acknowledge that “Fundamentally, computer science is a science of abstraction.” Computer scientists must create abstractions of real-world problems that can be represented and manipulated in a computer. Sometimes the process of abstraction is simple. For example, we use a logic to...

...had its roots in the work of two mathematicians, Paul Erdos and Alfred Renyi. Their work suggested that systems such as communications could be effectively modelled by connecting nodes with randomly placed links. Their simple approach revitalised graph theory and led to the emergence of the field of random networks.
An important prediction of random network theory is regardless of the random placement of links most nodes will still have approximately the same number of...

...LAB # 1
Graph Matching
Principles of Physics I Laboratory
Breanna Wilhite
Introduction
In this lab motion will be represented by graphs that plots distance and velocity vs. time. A motion detector will be used to measure the time it takes for a high frequency sound pulse to travel from the detector to an object and back. By using this method sound can determine the distance to the object, or its position. This device will determine in what direction the...

... |
1. Name three different kinds of graphs that are often used to plot information and discuss the value of each.
Answer:
Three types of graphs are line graph, histogram or bar graph, and pie chart graph.
The line graph is used to describe how an object moves explaining relationship between time and distance traveled.
A histogram or bar graph is used to compare quantities...

...Graphs and Function
What is the relation between the graphs and function and how was it applied in the real world?
Graphs are frequently used in national magazines and newspaper to present information about things such as the world’s busiest airports (O’Hare in China is first, Heathrow in London is sixth), about the advertising-dollar receivers in the United States (newspaper are first, radio is fourth) and about NCAA men’s golf team title...

...Baker Machine Company
Layout
Problem 3.4. (Summary)
Baker Machine is considering two alternative layouts. We will compare the Weighted-Distance Scores using rectilinear distance* of the two block plans to determine which alternative layout is better.
Alternative Layout 1 Alternative Layout 2
3 | 6 | 4 |
5 | 1 | 2 |
3 | 1 | 4 |
5 | 6 | 2 |
* rectilinear distance – the distance between two points with a series 90-degree turns, as along city blocks
Data
Baker Machine...

...Graph Theory
GraphsGraph:- A graph consists of a nonempty set of points or vertices, and a set of edges that link together the vertices. A simple real world example of a graph would be your house and the corner store. Where the house and the store are the vertices and the road between them is the edge connecting the two vertices.
Or a graph is a network consisting of vertices (or nodes) and edges...

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