andrew_gelman_stats andrew_gelman_stats-2010 andrew_gelman_stats-2010-474 knowledge-graph by maker-knowledge-mining
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Introduction: Nate writes : The Yankees have offered Jeter $45 million over three years — or $15 million per year. . . But that doesn’t mean that the process won’t be frustrating for Jeter, or that there won’t be a few hurt feelings along the way. . . . $45 million, huh? Even after taxes , that’s a lot of money!
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same-blog 1 0.99999988 474 andrew gelman stats-2010-12-18-The kind of frustration we could all use more of
Introduction: Nate writes : The Yankees have offered Jeter $45 million over three years — or $15 million per year. . . But that doesn’t mean that the process won’t be frustrating for Jeter, or that there won’t be a few hurt feelings along the way. . . . $45 million, huh? Even after taxes , that’s a lot of money!
2 0.14983237 1147 andrew gelman stats-2012-01-30-Statistical Murder
Introduction: Image via Wikipedia Robert Zubrin writes in “How Much Is an Astronaut’s Life Worth?” ( Reason , Feb 2012 ): …policy analyst John D. Graham and his colleagues at the Harvard Center for Risk Analysis found in 1997 that the median cost for lifesaving expenditures and regulations by the U.S. government in the health care, residential, transportation, and occupational areas ranges from about $1 million to $3 million spent per life saved in today’s dollars. The only marked exception to this pattern occurs in the area of environmental health protection (such as the Superfund program) which costs about $200 million per life saved. Graham and his colleagues call the latter kind of inefficiency “ statistical murder ,” since thousands of additional lives could be saved each year if the money were used more cost-effectively. To avoid such deadly waste, the Department of Transportation has a policy of rejecting any proposed safety expenditure that costs more than $3
3 0.14168398 1356 andrew gelman stats-2012-05-31-Question 21 of my final exam for Design and Analysis of Sample Surveys
Introduction: 21. A country is divided into three regions with populations of 2 million, 2 million, and 0.5 million, respectively. A survey is done asking about foreign policy opinions.. Somebody proposes taking a sample of 50 people from each reason. Give a reason why this non-proportional sample would not usually be done, and also a reason why it might actually be a good idea. Solution to question 20 From yesterday : 20. Explain in two sentences why we expect survey respondents to be honest about vote preferences but possibly dishonest about reporting unhealty behaviors. Solution: Respondents tend to be sincere about vote preferences because this affects the outcome of the poll, and people are motivated to have their candidate poll well. This motivation is typically not present in reporting behaviors; you have no particular reason for wanting to affect the average survey response.
4 0.13625303 1358 andrew gelman stats-2012-06-01-Question 22 of my final exam for Design and Analysis of Sample Surveys
Introduction: 22. A supermarket chain has 100 equally-sized stores. It is desired to estimate the proportion of vegetables that spoil before being sold. Three stores are selected at random and are checked: the percent of spoiled vegetables are 3%, 5%, and 10% in the three stores. Give an estimate and standard error for the percentage of spoiled vegetables for the entire chain. Solution to question 21 From yesterday : 21. A country is divided into three regions with populations of 2 million, 2 million, and 0.5 million, respectively. A survey is done asking about foreign policy opinions. Somebody proposes taking a sample of 50 people from each reason. Give a reason why this non-proportional sample would not usually be done, and also a reason why it might actually be a good idea. Solution: Nonproportional sampling is usually avoided because it makes the analysis more complicated and it results in a higher standard error for estimates of the general population. It might be a good idea her
5 0.12221757 491 andrew gelman stats-2010-12-29-Don’t try this at home
Introduction: Malecki’s right, this is very cool indeed. P.S. Is it really true that “4.5 million Parisians” ride the Metro every day? Even setting aside that not all the riders are Parisians, I’m guessing that 4.5 million is the number of rides, not the number of people who ride.
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same-blog 1 0.97942984 474 andrew gelman stats-2010-12-18-The kind of frustration we could all use more of
Introduction: Nate writes : The Yankees have offered Jeter $45 million over three years — or $15 million per year. . . But that doesn’t mean that the process won’t be frustrating for Jeter, or that there won’t be a few hurt feelings along the way. . . . $45 million, huh? Even after taxes , that’s a lot of money!
2 0.70463026 491 andrew gelman stats-2010-12-29-Don’t try this at home
Introduction: Malecki’s right, this is very cool indeed. P.S. Is it really true that “4.5 million Parisians” ride the Metro every day? Even setting aside that not all the riders are Parisians, I’m guessing that 4.5 million is the number of rides, not the number of people who ride.
3 0.6212225 1057 andrew gelman stats-2011-12-14-Hey—I didn’t know that!
Introduction: From Wikipedia (via Jay Livingston ): Newsweek sells only about 40,000 newsstand copies compared with 1.5 million subscriptions. (Both figures are substantially lower than they were a decade ago.) The figures for Time are about double those of Newsweek, but the ratio of newsstand sales to subscriptions is about the same. I guess I’m not surprised that most of the sales are from subscriptions, but I’m surprised the fraction is so close to 100%.
4 0.60490191 389 andrew gelman stats-2010-11-01-Why it can be rational to vote
Introduction: I think I can best do my civic duty by running this one every Election Day, just like Art Buchwald on Thanksgiving. . . . With a national election coming up, and with the publicity at its maximum, now is a good time to ask, is it rational for you to vote? And, by extension, wass it worth your while to pay attention to whatever the candidates and party leaders have been saying for the year or so? With a chance of casting a decisive vote that is comparable to the chance of winning the lottery, what is the gain from being a good citizen and casting your vote? The short answer is, quite a lot. First the bad news. With 100 million voters, your chance that your vote will be decisive–even if the national election is predicted to be reasonably close–is, at best, 1 in a million in a battleground district and much less in a noncompetitive district such as where I live. (The calculation is based on the chance that your district’s vote will be exactly tied, along with the chance that your di
5 0.60490191 1565 andrew gelman stats-2012-11-06-Why it can be rational to vote
Introduction: I think I can best do my civic duty by running this one every Election Day, just like Art Buchwald on Thanksgiving. . . . With a national election coming up, and with the publicity at its maximum, now is a good time to ask, is it rational for you to vote? And, by extension, wass it worth your while to pay attention to whatever the candidates and party leaders have been saying for the year or so? With a chance of casting a decisive vote that is comparable to the chance of winning the lottery, what is the gain from being a good citizen and casting your vote? The short answer is, quite a lot. First the bad news. With 100 million voters, your chance that your vote will be decisive–even if the national election is predicted to be reasonably close–is, at best, 1 in a million in a battleground district and much less in a noncompetitive district such as where I live. (The calculation is based on the chance that your district’s vote will be exactly tied, along with the chance that you
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19 0.51498747 2341 andrew gelman stats-2014-05-20-plus ça change, plus c’est la même chose
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1 0.89236057 188 andrew gelman stats-2010-08-06-Fake newspaper headlines
Introduction: I used this convenient site to create some images for a talk I’m preparing. (The competing headlines: “Beautiful parents have more daughters” vs. “No compelling evidence that beautiful parents are more or less likely to have daughters.” The latter gets cut off at “No compelling evidence that,” which actually works pretty well to demonstrate the sort of dull headline that would result if newspapers were to publish null results.)
2 0.81194389 1192 andrew gelman stats-2012-03-02-These people totally don’t know what Chance magazine is all about
Introduction: I received the following unsolicited email, subject line “Chance Magazine – Comedy Showcase”: Hi Andrew, Hope you’re doing well. I’m writing to let you know that we will be putting on an industry showcase at the brand new Laughing Devil Comedy Club (4738 Vernon Blvd. Long Island City) on Thursday, February 9th at 8:00 PM. If you’re unfamiliar, it’s one stop on the 7 train from Grand Central. Following the showcase, the club will stay open for an industry mingle/happy hour with drink specials and all the business card exchanging you can hope for. This showcase will feature 9 of our best: Steve Hofstetter’s latest album hit #1 in the world. He’ll be hosting Collin Moulton (Showtime Half Hour Special), Tony Deyo (Aspen Comedy Festival), Tom Simmons (Winner of the SF International Comedy Festival), Marc Ryan (Host of Mudslingers), Mike Trainor (TruTV), Jessi Campbell (CMT), Danny Browning (Bob & Tom), and Joe Zimmerman (Sirius/XM). I would love for you (and anyone you’d like to
3 0.75471717 680 andrew gelman stats-2011-04-26-My talk at Berkeley on Wednesday
Introduction: Something on Applied Bayesian Statistics April 27, 4:10-5 p.m., 1011 Evans Hall I will deliver one of the following three talks: 1. Of beauty, sex, and power: Statistical challenges in estimating small effects 2. Why we (usually) don’t worry about multiple comparisons 3. Parameterization and Bayesian modeling Whoever shows up on time to the seminar gets to vote, and I’ll give the talk that gets the most votes.
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Introduction: Nate writes : The Yankees have offered Jeter $45 million over three years — or $15 million per year. . . But that doesn’t mean that the process won’t be frustrating for Jeter, or that there won’t be a few hurt feelings along the way. . . . $45 million, huh? Even after taxes , that’s a lot of money!
5 0.72261536 1049 andrew gelman stats-2011-12-09-Today in the sister blog
Introduction: Everybody hates Jon Voter decision making with third party candidates Cognitive Factors in Bilingual Children’s Pragmatic Language Skills
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16 0.58624846 2060 andrew gelman stats-2013-10-13-New issue of Symposium magazine
18 0.57083714 674 andrew gelman stats-2011-04-21-Handbook of Markov Chain Monte Carlo
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