andrew_gelman_stats andrew_gelman_stats-2011 andrew_gelman_stats-2011-859 knowledge-graph by maker-knowledge-mining
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Introduction: Jeremy Miles writes: Are you familiar with Miller and Chapman’s (2001) article : Misunderstanding Analysis of Covariance saying that ANCOVA (and therefore, I suppose regression) should not be used when groups differ on a covariate. It has caused a moderate splash in psychology circles. I wondered if you had any thoughts on it. I had not heard of the article so I followed the link . . . ugh! Already on the very first column of the very first page they confuse nonadditivity with nonlinearity. I could probably continue with, “and it gets worse,” but since nobody’s paying me to read this one, I’ll stop reading right there on the first page! I prefer when people point me to good papers to read. . . .
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1 Jeremy Miles writes: Are you familiar with Miller and Chapman’s (2001) article : Misunderstanding Analysis of Covariance saying that ANCOVA (and therefore, I suppose regression) should not be used when groups differ on a covariate. [sent-1, score-0.796]
2 It has caused a moderate splash in psychology circles. [sent-2, score-0.715]
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4 Already on the very first column of the very first page they confuse nonadditivity with nonlinearity. [sent-8, score-0.908]
5 I could probably continue with, “and it gets worse,” but since nobody’s paying me to read this one, I’ll stop reading right there on the first page! [sent-9, score-1.158]
6 I prefer when people point me to good papers to read. [sent-10, score-0.349]
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same-blog 1 1.0 859 andrew gelman stats-2011-08-18-Misunderstanding analysis of covariance
Introduction: Jeremy Miles writes: Are you familiar with Miller and Chapman’s (2001) article : Misunderstanding Analysis of Covariance saying that ANCOVA (and therefore, I suppose regression) should not be used when groups differ on a covariate. It has caused a moderate splash in psychology circles. I wondered if you had any thoughts on it. I had not heard of the article so I followed the link . . . ugh! Already on the very first column of the very first page they confuse nonadditivity with nonlinearity. I could probably continue with, “and it gets worse,” but since nobody’s paying me to read this one, I’ll stop reading right there on the first page! I prefer when people point me to good papers to read. . . .
Introduction: Writing in the Washington Post, Matt Miller wants a billionaire to run for president and “save the country.” We already have two billionaires running for president. (OK, not really. Romney has a mere quarter of a billion bucks, and it’s Huntsman’s dad, not Huntsman himself, who’s the billionaire in that family.) And, according to all reports, NYC mayor Bloomberg would run for president in an instant if he thought he’d have a chance of winning. So we should amend Miller’s article to say that he wants a billionaire presidential candidate who (a) shares the political views of a “senior fellow at the Center for American Progress and co-host of public radio’s “Left, Right, and Center” and (b) has a chance of winning. That shouldn’t be too hard to find, right? Hey, I have an idea! MIller writes that that Thomas Friedman just wrote a book arguing that “the right independent candidacy could provide for our dysfunctional politics presents an unrivaled opportunity.” Friedman’s actu
Introduction: See page 179 here for Gowa’s review from 1986. And here’s my version (from 2008).
4 0.10948712 1080 andrew gelman stats-2011-12-24-Latest in blog advertising
Introduction: I received the following message from “Patricia Lopez” of “Premium Link Ads”: Hello, I am interested in placing a text link on your page: http://andrewgelman.com/2011/07/super_sam_fuld/. The link would point to a page on a website that is relevant to your page and may be useful to your site visitors. We would be happy to compensate you for your time if it is something we are able to work out. The best way to reach me is through a direct response to this email. This will help me get back to you about the right link request. Please let me know if you are interested, and if not thanks for your time. Thanks. Usually I just ignore these, but after our recent discussion I decided to reply. I wrote: How much do you pay? But no answer. I wonder what’s going on? I mean, why bother sending the email in the first place if you’re not going to follow up?
5 0.10528505 1477 andrew gelman stats-2012-08-30-Visualizing Distributions of Covariance Matrices
Introduction: Since we’ve been discussing prior distributions on covariance matrices, I will recommend this recent article (coauthored with Tomoki Tokuda, Ben Goodrich, Iven Van Mechelen, and Francis Tuerlinckx) on their visualization: We present some methods for graphing distributions of covariance matrices and demonstrate them on several models, including the Wishart, inverse-Wishart, and scaled inverse-Wishart families in different dimensions. Our visualizations follow the principle of decomposing a covariance matrix into scale parameters and correlations, pulling out marginal summaries where possible and using two and three-dimensional plots to reveal multivariate structure. Visualizing a distribution of covariance matrices is a step beyond visualizing a single covariance matrix or a single multivariate dataset. Our visualization methods are available through the R package VisCov.
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12 0.078376263 1117 andrew gelman stats-2012-01-13-What are the important issues in ethics and statistics? I’m looking for your input!
13 0.076178513 2245 andrew gelman stats-2014-03-12-More on publishing in journals
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18 0.071047485 1098 andrew gelman stats-2012-01-04-Bayesian Page Rank?
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same-blog 1 0.97705054 859 andrew gelman stats-2011-08-18-Misunderstanding analysis of covariance
Introduction: Jeremy Miles writes: Are you familiar with Miller and Chapman’s (2001) article : Misunderstanding Analysis of Covariance saying that ANCOVA (and therefore, I suppose regression) should not be used when groups differ on a covariate. It has caused a moderate splash in psychology circles. I wondered if you had any thoughts on it. I had not heard of the article so I followed the link . . . ugh! Already on the very first column of the very first page they confuse nonadditivity with nonlinearity. I could probably continue with, “and it gets worse,” but since nobody’s paying me to read this one, I’ll stop reading right there on the first page! I prefer when people point me to good papers to read. . . .
2 0.80196702 1240 andrew gelman stats-2012-04-02-Blogads update
Introduction: A few months ago I reported on someone who wanted to insert text links into the blog. I asked her how much they would pay and got no answer. Yesterday, though, I received this reply: Hello Andrew, I am sorry for the delay in getting back to you. I’d like to make a proposal for your site. Please refer below. We would like to place a simple text link ad on page http://andrewgelman.com/2011/07/super_sam_fuld/ to link to *** with the key phrase ***. We will incorporate the key phrase into a sentence so it would read well. Rest assured it won’t sound obnoxious or advertorial. We will then process the final text link code as soon as you agree to our proposal. We can offer you $200 for this with the assumption that you will keep the link “live” on that page for 12 months or longer if you prefer. Please get back to us with a quick reply on your thoughts on this and include your Paypal ID for payment process. Hoping for a positive response from you. I wrote back: Hi,
3 0.78961456 1080 andrew gelman stats-2011-12-24-Latest in blog advertising
Introduction: I received the following message from “Patricia Lopez” of “Premium Link Ads”: Hello, I am interested in placing a text link on your page: http://andrewgelman.com/2011/07/super_sam_fuld/. The link would point to a page on a website that is relevant to your page and may be useful to your site visitors. We would be happy to compensate you for your time if it is something we are able to work out. The best way to reach me is through a direct response to this email. This will help me get back to you about the right link request. Please let me know if you are interested, and if not thanks for your time. Thanks. Usually I just ignore these, but after our recent discussion I decided to reply. I wrote: How much do you pay? But no answer. I wonder what’s going on? I mean, why bother sending the email in the first place if you’re not going to follow up?
4 0.74715 365 andrew gelman stats-2010-10-24-Erving Goffman archives
Introduction: Brayden King points to this page of materials on sociologist Erving Goffman. Whenever I’ve read about Goffman, it always seems to be in conjunction with some story about his bad behavior–in that respect, King’s link above does not disappoint. In the absence of any context, it all seems mysterious to me Once or twice I’ve tried to read passages in books by Goffman but have never manage to get through any of it. (This is not mean as any kind of criticism, it’s just a statement of my lack of knowledge.) I was amused enough by the stories reported by King that I clicked through to the Biographical Materials section of the Goffman page and read a few. I still couldn’t really quite get the point, though, perhaps in part because I only know one of the many people on that list.
5 0.70701379 806 andrew gelman stats-2011-07-17-6 links
Introduction: The Browser asked me to recommend 6 articles for their readers. Here’s what I came up with. I really wanted to link to this one but it wouldn’t mean much to people who don’t know New York. I also recommended this (if you’ll forgive my reference to bowling), but I think it was too much of a primary source for their taste.
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same-blog 1 0.96879607 859 andrew gelman stats-2011-08-18-Misunderstanding analysis of covariance
Introduction: Jeremy Miles writes: Are you familiar with Miller and Chapman’s (2001) article : Misunderstanding Analysis of Covariance saying that ANCOVA (and therefore, I suppose regression) should not be used when groups differ on a covariate. It has caused a moderate splash in psychology circles. I wondered if you had any thoughts on it. I had not heard of the article so I followed the link . . . ugh! Already on the very first column of the very first page they confuse nonadditivity with nonlinearity. I could probably continue with, “and it gets worse,” but since nobody’s paying me to read this one, I’ll stop reading right there on the first page! I prefer when people point me to good papers to read. . . .
2 0.94756985 1712 andrew gelman stats-2013-02-07-Philosophy and the practice of Bayesian statistics (with all the discussions!)
Introduction: My article with Cosma Shalizi has appeared in the British Journal of Mathematical and Statistical Psychology. I’m so glad this paper has come out. I’d been thinking about writing such a paper for almost 20 years. What got me to actually do it was an invitation a few years ago to write a chapter on Bayesian statistics for a volume on the philosophy of social sciences. Once I started doing that, I realized I had enough for a journal article. I contacted Cosma because he, unlike me, was familiar with the post-1970 philosophy literature (my knowledge went only up to Popper, Kuhn, and Lakatos). We submitted it to a couple statistics journals that didn’t want it (for reasons that weren’t always clear ), but ultimately I think it ended up in the right place, as psychologists have been as serious as anyone in thinking about statistical foundations in recent years. Here’s the issue of the journal , which also includes an introduction, several discussions, and a rejoinder: Prior app
Introduction: Tyler Cowen discusses his and Bryan Caplan’s reaction to that notorious book by Amy Chua, the Yale law professor who boasts of screaming at her children, calling them “garbage,” not letting them go to the bathroom when they were studying piano, etc. Caplan thinks Chua is deluded (in the sense of not being aware of research showing minimal effects of parenting on children’s intelligence and personality), foolish (in writing a book and making recommendations without trying to lean about the abundant research on child-rearing), and cruel. Cowen takes a middle view in that he doesn’t subscribe to Chua’s parenting strategies but he does think that his friends’ kids will do well (and partly because of his friends’ parenting styles, not just from their genes). Do you view yourself as special? I have a somewhat different take on the matter, an idea that’s been stewing in my mind for awhile, ever since I heard about the Wall Street Journal article that started this all. My story is
4 0.9463982 159 andrew gelman stats-2010-07-23-Popular governor, small state
Introduction: A couple years ago, upon the selection of Sarah Palin as vice-presidential nominee, I made some graphs of the popularity of governors of different-sized states: As I wrote at the time : It seems to be easier to maintain high approval in a small state. What’s going on? Some theories: in a large state, there will be more ambitious politicians on the other side, eager to knock off the incumbent governor; small states often have part-time legislatures and thus the governor is involved in less political conflict; small states (notably Alaska) tend to get more funds per capita from the federal government, and it’s easier to be popular when you can disburse more funds; large states tend to be more heterogeneous and so it’s harder to keep all the voters happy. I was curious how things have been going more recently, and Hanfei made an updated graph using data from this archive . Here’s the story: There’s lots of variation–clearly there are many other factors than state popu
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Introduction: The pre-NYT David Brooks liked to make fun of the NYT. Here’s one from 1997 : I’m not sure I’d like to be one of the people featured on the New York Times wedding page, but I know I’d like to be the father of one of them. Imagine how happy Stanley J. Kogan must have been, for example, when his daughter Jamie got into Yale. Then imagine his pride when Jamie made Phi Beta Kappa and graduated summa cum laude. . . . he must have enjoyed a gloat or two when his daughter put on that cap and gown. And things only got better. Jamie breezed through Stanford Law School. And then she met a man—Thomas Arena—who appears to be exactly the sort of son-in-law that pediatric urologists dream about. . . . These two awesome resumes collided at a wedding ceremony . . . It must have been one of the happiest days in Stanley J. Kogan’s life. The rest of us got to read about it on the New York Times wedding page. Brooks is reputed to be Jewish himself so I think it’s ok for him to mock Jewish peop
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