1302 search results for "Excel"

Twenty rules for good graphics

August 6, 2010
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Twenty rules for good graphics

One of the things I repeatedly include in referee reports, and in my responses to authors who have submitted papers to the International Journal of Forecasting, are comments designed to include the quality of the graphics. Recently someone asked on stats.stackexchange.com about best practices for producing plots. So I thought it might be helpful to

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use R! 2010 conference — reflections

August 4, 2010
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From July 20-23, this year's use R! conference took place in Gaithersburg near Washington. I attended the conference as part of my holidays in the U.S. and had a good time there. I met some people, even though that is not the easiest thing for me to do, and I got some inspirations and ideas I outline below:Stat appsOne...

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The Mule goes SURFing

July 29, 2010
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A month ago I posted about “SURF”, the newly-established Sydney R user forum (R being an excellent open-source statistics tool). Shortly after publishing that post, I attended the inaugural forum meeting. While we waited for attendees to arrive, a few people introduced themselves, explaining why they were interested in R and how much experience they

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Mystery solved: The discrepancy in homicide data

July 27, 2010
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Mystery solved: The discrepancy in homicide data

I've been complaining about how homicide statistics from police sources were too low in 2009, with the entire state of Chihuahua having less homicides than its biggest city. I was thinking of finding out if I could use the IFAI (Freedom of Information Access) to obtain the original CIEISP forms which the state police forces are supposed to fill out each month...

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Mystery solved: The discrepancy in homicide data

July 27, 2010
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Mystery solved: The discrepancy in homicide data

I've been complaining about how homicide statistics from police sources were too low in 2009, with the entire state of Chihuahua having less homicides than its biggest city. I was thinking of finding out if I could use the IFAI (Freedom of Information Access) to obtain the original CIEISP forms which the state police forces are supposed to fill out each month...

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R Chart

July 24, 2010
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R Chart

Been meaning to write this for awhile...An R-Chart is a statistical quality assurance tool used to determine if a process is stable (and predictable).  It is intended to maintain and improve the quality of a process (a more formal definition is av...

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useR! 2010 done and dusted

July 23, 2010
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useR! 2010 done and dusted

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Thoroughly Unusual Itches

July 23, 2010
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Thoroughly Unusual Itches

I have found myself over the years in a rather awkward situation.  I work in old-school, bricks and mortar industry IT shops for the most part.  However, I love many open source projects and identify with many of the values of start up cultur...

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Why building R packages is good for you

July 23, 2010
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Basically every function you use in R is part of a package (often the base or stats one). Most of the advances routines, such as the differential equations solvers in simecol are brought to R in the form of Fortran (…)Read the rest of this entry »

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Quick scatterplot with associated histograms

July 22, 2010
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Quick scatterplot with associated histograms

R can produce some beautiful graphics, and there are some excellent packages, such as lattice and ggplot2 to represent data in original ways.  But sometimes, all you want to do is explore the realtionship between pairs of variables with the minimum of fuss. In this post we’ll use the data which we imported in the

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