Category Archives: data

Intro to Survey Analysis

Posted on November 27, 2013 by Nick

Lately, more people have approached me with questions on how to analyze survey data. There are very interesting problems associated with survey analysis. In dealing with surveys, I have seen mistakes made in creating them. Here are some general rules … Continue reading →

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Separating Blocks of Numbers in Columns of Data

Posted on October 5, 2013 by Nick

More and more I'm using the 'apply' functions in R (apply, mapply, sapply, lappy,...). The help functions on these are hard to decipher. Not till I read a post by Neil Saunders, did I really start using them instead of … Continue reading →

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Quick Data Tip in R and Excel

Posted on September 22, 2013 by Nick

Last week, a colleague showed me a trick in excel.  And it really bugs me when you can do something in excel that R can not do easily.  So I gave it some thought and came up with a solution.  … Continue reading →

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Approaching Data Analysis

Posted on September 20, 2013 by Nick

All data analysis projects start with a problem.  We (hopefully) form a hypothesis before exploring the data, and we go about trying to confirm/disprove hypotheses with statistical procedures.  These statistical procedures could be a simple t-test, a more complicated non-parametric … Continue reading →

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