Data Presentation

  • Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write! Quote from the presidential address in 1951 of mathematical statistician Samuel S. Wilks (1906 - 1964) to the American Statistical Association found in "JASA",Vol. 46, No. 253., pp. 1-18. Wilks was paraphrasing Herbert G. Wells (1866 - 1946) from his book "Mankind in the Making". The full H.G. Wells quote reads: "The great body of physical science, a great deal of the essential fact of financial science, and endless social and political problems are only accessible and only thinkable to those who have had a sound training in mathematical analysis, and the time may not be very remote when it will be understood that for complete initiation as an efficient citizen of one of the new great complex worldwide States that are now developing, it is as necessary to be able to compute, to think in averages and maxima and minima, as it is now to be able to read and write."
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  • One sees in this essay that the theory of probabilities is basically only common sense reduced to a calculus. This quote of French astronomer and mathematician Pierre-Simon Laplace (1749 - 1827) may be found in "A philosophical Essay on Probabilities" (Springer, 1995) p. 124 English translation of "Essai Philosophique sur les Probabilites (1814)"
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  • USA Today has come out with a new survey - apparently three out of four people make up 75 percent of the population. Quote from comedian and late night talk show host David Letterman (1947 - ).
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  • A knowledge of statistics is like a knowledge of foreign languages or of algebra; it may prove of use at any time under any circumstances. Quote from "Elements of Statistics" by English statistician, economist and early proponent of using statistics in the social sciences, Sir Arthur Lyon Bowley (1869 - 1957).
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  • Life is a school of probability. A quote attributed to English journalist and longtime editor of "The Economist" newspaper, Walter Bagehot (1826 - 1877). The quote is found in "The World of Mathematics", J.R. Newman (ed.); Simon and Schuster, 1956 p. 1360.
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  • What do you call a tea party with more than 30 people? A Z party! This is joke #123 on http://www.ilstu.edu/~gcramsey/Gallery.html Gary Ramseyer's First Internet Gallery of Statistics Jokes and is attributed by the gallery to Stacey Ecott.
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  • This JAVA applet assists the user in developing skills to classify a problem as one of the various types of confidence intervals, hypethesis tests and Chi Squared tests. This is not an easy application, but the comprehensive hints provided will improve the users skills in making such classifications.
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  • This recording of a web seminar (webinar) provides a tour of StatCrunch. StatCrunch (www.statcrunch.com) is a Web-based data analysis package. StatCrunch has all of the routines required for introductory statistics and many more. The software also offers pedagogical features such as interactive graphics. Many of these capabilities are discussed and demonstrated by StatCrunch developer Webster West.

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  • This Flash based applet simulates data from a case study of treatments for tumor growth in mice. This simulation allows the user to place mice into a control and treatment groups. The simulation then compares the difference in the groups based on this haphazard selection to those of a truly random assignment (the user may also create multiple random assignments and examine the sampling distribution of key statistics). The applet may be used to illustrate three points about random assignment in experiments: 1) how it helps to eliminate bias when compared with a haphazard assignment process, 2) how it leads to a consistent pattern of results when repeated, and 3) how it makes the question of statistical significance interesting since differences between groups are either from treatment or by the luck of the draw. In this webinar, the activity is demonstrated along with a discussion of goals, context, background materials, class handouts, and assessments. Key Note for Instructors: The data are drawn from a real experiment with an effective treatment but where the response is correlated with animal age and size (so tumor size will tend to be smaller in the treatment group when measured at the end of a randomized experiment but animal age and size should not be). Typically people choosing haphazardly will tend to pick larger/older animals for the treatment group and thus create a bias against the treatment.
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  • It is easy to lie with statistics, but it is easier to lie without them. Quote attriuted to Frederick Mosteller (1916 - 2006)

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