1 / 142

Seeing something once is worth hearing about it a hundred times.

Seeing something once is worth hearing about it a hundred times. The Solution: The double y-axis graph The most powerful tool for misleading graphics ever devised.

maire
Download Presentation

Seeing something once is worth hearing about it a hundred times.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Seeing something onceis worth hearing about ita hundred times.

  2. The Solution:The double y-axis graphThe most powerful tool for misleading graphics ever devised.

  3. I gather, young man, that you wish to be a Member of Parliament. The first lesson that you must learn is, when I call for statistics about the rate of infant mortality, what I want is proof that fewer babies died when I was Prime Minister than when anyone else was Prime Minister. That is a political statistic.Winston Churchill (1874-1965)

  4. The Ithaca Times - October 20, 2000

  5. How to display data badlyHoward WainerNational Board of Medical Examiners

  6. Three wonderful books by my favorite author:Picturing the Uncertain World: How to Understand, Communicate and Control Uncertainty through Graphical Display . Princeton, NJ: Princeton University Press, 2009.Graphic Discovery: A Trout in the Milk and Other Visual Adventures. Princeton, N.J.: Princeton University Press, 2005. Visual Revelations: Graphical Tales of Fate and Deception from Napoleon Bonaparte to Ross Perot. (2nd edition) Hillsdale, N. J.: Lawrence Erlbaum Associates, 2000.

  7. “Closing averages on the human scene were mixed today.Brotherly love was down two points, while enlightened self-interest gained a half.Vanity showed no movement, and guarded optimism slipped a point in sluggish trading.Overall, the status quo remained unchanged.”

  8. Of good graphs it may be said what Mark Van Doren observed about brilliant conversationalists:In their presence others speak well.A good graph is quiet and lets the data tell their story clearly and completely.

  9. Along each line are numbers which are turning points in the race between men and fire,And if the lines are viewed as a race the numbers mark off legs of the race,If they also have religious significance they are stations of the cross,And if they have literary significance they mark off acts of drama,…But the acts are short, because modern wildfire allows no time for soliloquies.Norman Maclean (1992) Young Men and Fire. Chicago: University of Chicago Press.

  10. The four purposes of graphs1. Exploration - The data contain a message and we would like to find out what it is.2. Communication - We know something and we wold like to tell others.3. Calculation - Graphs can serve as visual algorithms (nomogaphs) that enable us to determine at-a-glance what might otherwise be tedious to calculate.4. Decoration - Graphs are pretty and can be used to enliven what might otherwise be a dull presentation.

  11. “Some, to beautify their Halls, Parlors,Chambers, Galeries, Studies, or Libraries….Liketh, loveth, getteth and useth, Maps,Charts, and Geographicall Globes.”(John Dee, 1570)

  12. The Aim of Good Data Graphics is toDisplay DataAccurately and Clearly.

  13. Include as few data as possible(minimize the data density)

  14. You can boost data density through the use of small multiples

  15. II. Hide what data you do show(minimize the data-ink ratio)

  16. Hide the data in the grid

  17. Relation of Actual Rates of Registration to Predicted Rates (104 cities 1960) Another published version of the same data improved the data-ink ratio up to about 0.7.

More Related