Nov 04 2012
Bill Maher is fond of repeating his line: "Being a Republican doesn't make you a racist, but if you're a racist you're probably a Republican." This attitude has obvious anecdotal examples to support it. The numerous racist signs shown at Tea Party rallies, the incredibly low minority support for and participation in the GOP, things …
Oct 15 2012
In a previous installment, I showed the results of sampling a population to determine some fact: In that case, it was a hypothetical measurement of the number supporting Obama. By taking 50 "people" at random in the set and tabulating their responses, one gets a rough estimate of the actual proportion of the population who …
Oct 10 2012
A test for cancer is positive 99% of the time that a patient actually has cancer, and is negative 95% of the time a patient does not have cancer (suppose only 1/1000 in the population has this type of cancer). Question: if a patient's test comes up positive, what is the probability he has cancer? …
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