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Category Archives: analysis
Short Circuiting Logical Statements in R
Short circuiting logical statements are the way ‘lazy’ programming languages evaluate logical statements. To identify whether or not the programming language you are using is lazy or eager, reference the chart on the wiki page: http://en.wikipedia.org/wiki/Shortcircuit_evaluation The lazy (and quicker) … Continue reading
Big Data Introduction
Happy Holidays! For the next few posts, I will be talking about using some tools/tricks on big data. I think that the term 'big data' gets thrown around a bit much these days. The more common definition of big data … Continue reading
The Simplicity of Python (an example)
Previously, I posted on how to forward fill missing data in columns of data in R and Excel. I just figured out how to do this in Python, and was blown away. Ready? data = Series(['A','B','C','D','E','F'], index = [0,2,5,7,12,14]) data.reindex(range(14),method='ffill') … Continue reading
Intro to Survey Analysis
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
Prime Time Calculation
Number theory has always interested me, specifically irrational numbers and prime numbers. I was messing around with functions in R and came up with a very neat ‘one line’ function in R that checks if a number is prime. See … Continue reading