2909 search results for "ggplot"

Dependencies of popular R packages

July 8, 2014
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Dependencies of popular R packages

With the growing popularity of R, there is an associated increase in the popularity of online forums to ask questions. One of the most popular sites is StackOverflow, where more than 60 thousand questions have been asked and tagged to be related to R. On the same page, you can also find related tags. Among the top 15 tags...

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How to pick up 3 numbers from a uniform distribution in a transparent manner?

July 7, 2014
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How to pick up 3 numbers from a uniform distribution in a transparent manner?

Over in my previous post, I’m giving away 3 copies of my video course on ggplot2 and shiny. To win a copy, you just need to leave a comment and I will select 3 winners among the n participants at … Continue reading →

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Automatic bias correction doesn’t fix omitted variable bias

July 4, 2014
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Automatic bias correction doesn’t fix omitted variable bias

Page 94 of Gelman, Carlin, Stern, Dunson, Vehtari, Rubin “Bayesian Data Analysis” 3rd Edition (which we will call BDA3) provides a great example of what happens when common broad frequentist bias criticisms are over-applied to predictions from ordinary linear regression: the predictions appear to fall apart. BDA3 goes on to exhibit what might be considered Related posts:

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Finding the distance from ChIP signals to genes

July 4, 2014
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Finding the distance from ChIP signals to genes

I’ve had a couple of months off from blogging. Time for some computer-assisted biology! Robert Griffin asks on Stack Exchange about finding the distance between HP1 binding sites and genes in Drosophila melanogaster.  We can get a rough idea with some public chromatin immunoprecipitation data, R and the wonderful BEDTools. Finding some binding sites There

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Cohort analysis with R – Retention charts

Cohort analysis with R – Retention charts

When we spend more money for attracting new customers then they bring us by the first but, usually, by the next purchases, we appeal to customer’s life-time value (CLV). We expect that customers will spend with us for years and it means we expect to earn some profit finally. In this case retention is vital parameter. Most of our... Read More »

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2014 UseR conference, days 1-2

July 2, 2014
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2014 UseR conference, days 1-2

I’m at UCLA for the UseR Conference. I attended once before, and I really enjoyed it. And I’m really enjoying this one. I’m learning a ton, and I find the talks very inspiring. In my comments below, I give short shrift to some speakers (largely by not having attended their talks), and I’m critical in

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Frequentist inference only seems easy

July 1, 2014
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Frequentist inference only seems easy

Two of the most common methods of statistical inference are frequentism and Bayesianism (see Bayesian and Frequentist Approaches: Ask the Right Question for some good discussion). In both cases we are attempting to perform reliable inference of unknown quantities from related observations. And in both cases inference is made possible by introducing and reasoning over Related posts:

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How To Approximate Pi With A Short Pencil And A Big Paper

July 1, 2014
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How To Approximate Pi With A Short Pencil And A Big Paper

Experiment, be curious: though interfering friends may frown, get furious at each attempt to hold you down (Tony Bennett, Experiment) Instructions: Take a pencil and measure it Take a piece of paper and draw parallel lines on it (you can use the pencil, of course); separation between lines should double the length of the pencil Toss the pencil

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Jun 26-27, 2014 – Introduction to Data Science with R in NYC

June 26, 2014
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Jun 26-27, 2014 – Introduction to Data Science with R in NYC

You can either register from eventbrite or our school site NYC Data Science Academy. Date: Thursday/Friday , June 26th and 27th, 2014 Time:  9:00am to 5:00pm Location: 500 7th Ave, 17th Floor, glass door classroom, New York, NY 10018 NYC Data Science Academy, training subbrand of SupStat (Official Training partner with RStudio Inc) is hosting our... Read more »

What Would Cohen Have Titled “The Earth is Round (p < .05)” in 2014?

June 25, 2014
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What Would Cohen Have Titled “The Earth is Round (p < .05)” in 2014?

The area of bibliometrics is not my area of expertise but is still of interest as a researcher. I sometimes think about how Google has impacted the way we title articles. Gone are the days of witty, snappy titles. Title … Continue reading →

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