1270 search results for "Excel"

How much is a shower?

December 29, 2011
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How much is a shower?

After looking at my heating expenses, I turned to the costs for water heating. For some time, I looked at my water meter before and after taking a shower or a bath. Quite often, I forgot one or the other measurement, but I collected about 40 observations. Here is what they look like:The data suggest that for a...

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Fed Loan Data Part 1

December 27, 2011
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Fed Loan Data Part 1

This is the start of analyzing the Federal Reserve and Banking data mentioned in my "A Christmas Miracle". The file is a combination of summary data and actual data from each of the 400+ banks that recieved funds from the Federal Reserve during 2007-20...

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Legislative Activity in the Danish Parliament

December 22, 2011
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Legislative Activity in the Danish Parliament

As mentioned in this post, I have been using the powerful combination of the Beautiful Soup and Mechanize modules in Python to build a web scrapers. The amount of data on the web is amazing, and I believe that any quantitatively oriented social scienti...

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Simulating Confidence Intervals

December 20, 2011
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Simulating Confidence Intervals

As I am finishing up my thesis I have recently been plotting effects from many models. An important aspect of this is to show the uncertainty surrounding different estimates and effects. Following a paper by Gary King, Michael Tomz and Jason Wittenberg...

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December 2011 issue of the R Journal: An overview

December 20, 2011
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December 2011 issue of the R Journal: An overview

The December 2011 issue of the R Journal is now available for download. Three times a year, the open-access journal of the R project publishes peer-reviewed articles on research and applications of R and R packages. As of the latest issue, all articles are published under a Creative Commons license, making them accessible for translation, academic and commercial uses...

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Rotational Trading Strategies: borrowing ideas from Engineering Returns

December 19, 2011
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Rotational Trading Strategies: borrowing ideas from Engineering Returns

Frank Hassler at Engineering Returns blog wrote an excellent article Rotational Trading: how to reduce trades and improve returns. The article presents four methods to reduce trades: Trade less frequently. I.e. weekly instead of daily rebalancing. Different criteria for enter / exit a trade. Smooth the rank over the last couple of bars. Combination of

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The R Journal (Volume 3/2, December 2011) is out

December 19, 2011
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The new R journal for December 2011 is out! You can Download the complete issue from here, while refereed articles may be downloaded individually using the links below: Table of Contents Editorial 3   Contributed Research Articles   Creating and Deploying an Application with (R)Excel and R  Thomas Baier, Erich Neuwirth and Michele De Meo 5 glm2: Fitting Generalized Linear Models...

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Spatial Data with R

December 19, 2011
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Spatial Data with R

On September 14th 2011 Dr Alec Stephenson gave a talk on exploring spatial data with R (see Meetup page). The video of the talk is now available online. The talk provides a non-mathematical and entirely equation-free talk on visualizing and … Continue reading →

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data.frame objects in R (via “R in Action”)

December 18, 2011
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data.frame objects in R (via “R in Action”)

The followings introductory post is intended for new users of R.  It deals with R data frames: what they are, and how to create, view, and update them. This is a guest article by Dr. Robert I. Kabacoff, the founder of (one of) the first online R tutorials websites: Quick-R.  Kabacoff has recently published the book ”R Read more...

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IRIS Flower Data Set (R-001)

December 17, 2011
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IRIS Flower Data Set (R-001)

IRIS Flower Data SetEste es el Link a Wikipedia donde podéis encontrar los datos que utilizó Fisher en su trabajo de 1936. Ya hemos trabajado con estos datos en Excel y los continuaremos usando en nuevas entradas.En este link, podemos ver las fotos de las flores (IRIS en castellano son lírios).Represento como LS (longitud del sépalo), AS...

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