Absolute Deviation Around the Median

Median Absolute Deviation (MAD) or¬†Absolute Deviation Around the Median as stated in the title, is a robust measure of central tendency. Robust statistics are statistics with good performance for data drawn from a wide range of non-normally distributed probability distributions.¬†Unlike the standard mean/standard deviation combo, MAD is not sensitive to the presence of outliers. This […]

My Trip to Spain: The R User Conference 2013

I was fortunate enough to attend the 2013 UseR! conference in Albacete, Spain this year. I had a great time meeting fellow R users and exchanging ideas on R implementations. The conference is also one of the few opportunities to gain exposure to uses of R in other disciplines because there are so many talks […]

Gradient Boosting: Analysis of LendingClub’s Data

I originally posted this article last year. I am reposting it as a primer for my upcoming article where I take a second look at LendingClub, but this time with the the Python data stack. An old 5.75% CD of mine recently matured and seeing that those interest rates are gone forever, I figured I’d […]