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  • Percent Change

    This resource defines and explains percent changes using an example on city murder rates.

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  • Median

    This resource defines and explains the median using an example on employee salaries.

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  • Mean

    This resource defines and explains the arithmetic mean using an example on employee salaries.

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  • **Statistics Every Writer Should Know

    This site provides an introduction to basic statistical concepts for journalists and writers with little math background. Key Words: Mean; Median; Percent Changes; Per capita; Rates; Standard Deviation; Normal Distribution; Margin of Error; Confidence Interval; Data Analysis; Sample Sizes; Statistical Tests; Student's T.

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  • Intuitive Biostatistics: Choosing a Statistical Test

    This page provides a table for selecting an appropriate statistical method based on type of data and what information is desired from the data. It also compares parametric and nonparametric tests, one-sided and two-sided p-values, paired and unpaired tests, Fisher's test and the Chi-square test, and regression and correlation. It comes from Chapter 37 of the textbook, "Intuitive Biostatistics".

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  • Understanding the Least-Squares Regression Line

    This applet allows students to explore three methods for measuring "goodness of fit" of a linear model. Users can manipulate both the data and the regression line to see changes in the square error, the absolute error, and the shortest distance from the data point to the regression line.

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  • Joke: the Tea Party

    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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  • Quote: Bagehot on Probability

    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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  • Quote: Bowley on Statistics

    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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  • Quote: Letterman on Percentages

    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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