I spent several months working through the statistical analysis portion of my Dissertation with David. David was incredibly knowledgeable, competent and efficient. He immediately knows what to do and how to do it. He also explained everything really well, in easy to understand terms, and made me feel very comfortable in asking any question. He taught me more about Statistics in these months, than I have learned in the decades of formally studying it. David was instrumental in my completing my dissertation quickly, as he was always very responsive, and up for the task at hand. He is a true pleasure to work with, and I highly recommend him and encourage everyone to use him for a portion, if not the entire stats piece of what you are working on.