Posts Tagged ‘ methods() ’

Innumeracy and the Evidence for Higgs Boson

July 7, 2012
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Over the last week, science reporters got excited about understanding the Higgs-Boson particle, but not understanding the evidence for it. I describe the errors that many reporters are making and discuss what the evidence actually tells us. Continue re...

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Why I Don’t Like Coefficient Plots

July 6, 2012
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Over the last few days, I've written a couple of posts (here, here) about creating coefficient plots. I like them way better than tables, but I don't really see a need for them. In fact, I think they can be … Continue reading →

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Three Questions about a Matrix of Coefficient Plots

July 4, 2012
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It's Independence Day in the U.S., so I am taking the day off, but I received the following request for advice and thought I'd pass it along to my readers. I wonder if you could help – I am trying … Continue reading →

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An Improvement to Coefficient Plots

July 3, 2012
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I recently posted about coefficient plots, discussing my approach and providing some example R code to create the graphs. I had the good fortune of hearing Amanda Driscoll give a talk recently, and she made a small, but really nice … Continue rea...

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Even More on Concluding "No Effect" From Insignificant Slopes

July 2, 2012
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I recently came across Luk Arbuckle, who wrote a series of posts about accepting the null hypothesis after a failure to reject, so I thought I'd pass them along. Luk makes a series of points in three separate posts, each … Continue reading →

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Coefficient Plots in R

June 30, 2012
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One popular trend in presenting results is the "coefficient plot," an alternative to the table of regression coefficients. I am seeing this a little more often in political science research and have received a few requests for code, so I … Contin...

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More on Concluding "No Effect"

June 27, 2012
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I am reading through the book The Black Swan by Nassim Nicholas Taleb and he has a section relevant for a post I recently wrote about concluding "no effect" from a statistically insignificant slope. On pp. 54-55, Table writes ...we … Continue rea...

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Sunday data/statistics link roundup (6/24)

June 24, 2012
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We’ve got a new domain! You can still follow us on tumblr or here: http://simplystatistics.org/.  A cool article on MIT’s annual sports statistics conference (via @storeylab). I love how the guy they chose to highlight created what I woul...

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Example 9.35: Discrete randomization and formatted output

June 18, 2012
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Example 9.35: Discrete randomization and formatted output

A colleague asked for help with randomly choosing a kid within a family. This is for a trial in which families are recruited at well-child visits, but in each family only one of the children having a well-child visit that day can be in the study. The...

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Why You Shouldn’t Conclude "No Effect" from Statistically Insignificant Slopes

June 16, 2012
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It is quite common in political science for researchers to run statistical models, find that a coefficient for a variable is not statistically significant, and then claim that the variable "has no effect." This is equivalent to proposing a research ...

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