2267 search results for "ggplot"

Bayesian and Frequentist Approaches: Ask the Right Question

May 6, 2013
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Bayesian and Frequentist Approaches: Ask the Right Question

It occurred to us recently that we don’t have any articles about Bayesian approaches to statistics here. I’m not going to get into the “Bayesian versus Frequentist” war; in my opinion, which style of approach to use is less about philosophy, and more about figuring out the best way to answer a question. Once you Related posts:

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Google Analytics + R = FUN!

May 5, 2013
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Google Analytics + R = FUN!

The scope of this post it to show how simple it is to get data out of the Google Analytics and create your own reports (that you hope that they can be semi-automated at least) and you favourite statistical graphs (those that GA is currently missing). As you already know R is a favourite tool ...read more

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Google Analytics + R = FUN!

May 5, 2013
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Google Analytics + R = FUN!

The scope of this post it to show how simple it is to get data out of the Google Analytics and create your own reports (that you hope that they can be semi-automated at least) and you favourite statistical graphs (those that GA is currently missing). As you already know R is a favourite tool

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… ridiculously photogenic factors (heatmap with p-values)

May 5, 2013
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… ridiculously photogenic factors (heatmap with p-values)

Some months ago, I had to explore a vast amount of categorical variables before making some multivariate analyses. One good way to know your raw data, to make new hypotheses…etc, is to calculate some pairwise “crude” chi-square tests of independence … Sigue leyendo →

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Simulation shows gain of clmm over ANOVA is small

May 5, 2013
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Simulation shows gain of clmm over ANOVA is small

After last post's setting up for a simulation, it is now time to look how the models compare. To my disappointment with my simple simulations of assessors behavior the gain is minimal. Unfortunately, the simulation took much more time than I ...

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AIC & BIC vs. Crossvalidation

May 4, 2013
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AIC & BIC vs. Crossvalidation

Model selection is a process of seeking the model in a set of candidate models that gives the best balance between model fit and complexity (Burnham & Anderson 2002). I have always used AIC for that. But you can also…Read more →

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TV shows rated by episode as a Shiny App

May 1, 2013
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TV shows rated by episode as a Shiny App

A few days ago there was an interesting R based article by diffuseprior on the decline and fall in the quality of The Simpsons The author scraped results from GEOS, an online survey of TV programs, and applied the R package changepoint to offer an analysis of the show over time This seemed a candidate

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R for dummies

May 1, 2013
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R for dummies

I already mentioned R for dummies a while ago on the ‘Og and never got around to read it from cover to back. Now that I am reduced to a dummy state with too much free time!, I can produce a full review of the book. R for dummies was written by two Belgian statistics

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A Crash Course in R

May 1, 2013
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This code has been kindly contributed by Robin Edwards

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Feature Selection Strikes Back (Part 1)

April 29, 2013
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Feature Selection Strikes Back (Part 1)

In the feature selection chapter, we describe several search procedures ("wrappers") that can be used to optimize the number of predictors. Some techniques were described in more detail than others. Although we do describe genetic algorithms and how they can be used for reducing the dimensions of the data, this is the first of series of blog posts that...

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