Happy March 31 = 3/31 day

March 31, 2013

Translation

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Unemployment, 2000, for U.S. metropolitan areas: a surprising distribution

March 26, 2013

TranslationMy colleague Keith Resendes (@histogramma1) is very interested in U.S. unemployment rates, utilizing data from the U.S. Bureau of Labor Statistics. After some data munging, I got unemployment data, 2000-20313, by metropolitan area,  from the Bureau of Labor Statistics website into R. From there, extracting subsets of the data is straightforward. Here is the histogram - over U.S. metropolitan areas – for 2000: and here are the basic descriptive statistics: Mean = 4.2 [...]

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When is a date not a date?

March 26, 2013

Translation

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Think mathematics is (just) a language? Think again.

March 25, 2013

TranslationIf you think mathematics is just a language, ponder this:     and think again.   Courtesy of Chris Budd & +plus magazine And if, perchance,  that is not convincing enough, try this: for a positive real number let denote the number of primes less than or equal to , and let be the area, from [...]

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Happy 3/25 = 12/100 = 12% day

March 25, 2013

TranslationEvery day’s a mathematics day – an idea of David Coffey [@delta_dc on Twitter ]

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Happy 3/24 = 1/8 DAY

March 24, 2013

TranslationEvery day’s a mathematics day – an idea of David Coffey [@delta_dc on Twitter ], enthusiastically supported by Sue VanHattum [@suevanhattum ] and Denise at Let’s Play Math!    

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We should have been paying attention during Perl classes

March 22, 2013

TranslationA joint post by Keith Resendes (histogramma.com) and Gary Davis Image courtesy of http://translationbiz.wordpress.com 1. We found unemployment data in text format by metropolitan area, for several years (by months in fact) at a Bureau of Labor Statistics site. 2. Great! we thought: let’s read this into R using the read.table function. 3. Uh, oh! [...]

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Do you understand histograms as well as a 5th grader?

March 22, 2013

TranslationThis is a joint post of Keith Resendes (histogramma.com) and Gary Davis. Karl Pearson described histograms – and gave them their name – in 1895. As the cartoon below suggests, people still have trouble interpreting them today: Cartoon courtesy of www.whatthegregg.com In our experience, even university mathematics majors, studying statistics, have trouble with the meaning of histograms. But histograms can be explained to [...]

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Mathematics crossword

October 6, 2012

TranslationSolution Clues Across (1) First name of Australian Fields medalist. (5) Name of the mapping on [0, 1] (8) Ratio of probability of an event to probability of complementary event. (9) Type of group named after Norwegian mathematician. (11) The Harvard Smithsonian Center for Astrophysics has this (abbrev.) (12) A morphism that asserts essential sameness. [...]

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These people are not male, white, bearded or bald

June 22, 2012

TranslationThe following images are of black women who are research mathematicians. There are not enough of them, and their talents and abilities are not recognized in the wider community to the extent they should be. Young women, especially, young black women, who think mathematics is for old, bald white Aspergic men should think again. So [...]

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