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Study Bias Issues 22
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  • Quote: Bigelow on Cause and Effect

    It is a common error to infer that things which are consecutive in the order of time have necessarily the relation of cause and effect. is a quote by American botanist and medical educator Jacob Bigelow (1787 - 1879). The quote appears on page 41 of his 1859 book "Nature in Disease: illustrated in various discourses and essays".

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  • Quote: O'Brien on Research Studies

    A study in the Washington Post says that women have better verbal skills than men. I just want to say to the authors of that study: 'Duh.' This a quote from American comedian and talk show host Conan O'Brien (1963 - ) delivered on his TV show "Late Night with Conan O'Brien".

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  • Cartoon: Parameter Notation

    A cartoon to use with discussion of notation for parameter values. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.

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  • Cartoon: Driving Dangers

    A cartoon to teach about interpreting observational studies. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.

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  • Two Sample Tests

    This lesson introduces two sample hypothesis testing for means and discusses the one-tailed and two-tailed t-tests.

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  • Polls: What Do the Numbers Tell Us?

    This tutorial opens with a survey on polling. Upon completing the survey, students are taken through an election example which uses polling to explain random sampling, bias, margin of error, and confidence intervals.

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  • Probability and Statistics Journals on the Web

    This site contains links to journals on probability and statistics published around the world. "Some publishers require registration to browse abstracts. Others require a current subscription to the journal by you or your institution. Most browsable titles, abstracts and papers are only for the past year or so."

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  • Joke: the number of offspring

    Statistics play an important role in genetics. For instance, statistics prove that the number of offspring you will have is an inherited trait. If your parents didn't have any kids, odds are you won't either. Joke #137 of Gary Ramseyer's "First Internet Gallery of Statistics Jokes" contributed by Hugh W. Graham of Abbott Labs.

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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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  • Quote: Brinner on Anecdotes

    The plural of anecdote is not data. Attributed to American economist Roger E. Brinner in the on-line list of quotes at www.keypress.com/fathom/fathom1/quotes.html

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