Justin Holman is CEO of Aftermarket Analytics, where he leads efforts to develop cutting edge sales forecasting and inventory optimization technology for the Automotive Aftermarket. Prior to joining Aftermarket Analytics, Justin managed corporate consulting for the Strategy & Analytics division at MapInfo Corporation, leading major projects for retail clients including The Home Depot, Darden Restaurants, Bridgestone-Firestone, Sainsbury’s and New York & Company. Before that, Justin served as Vice President of Software Development at LogicTools, now part of IBM's supply chain application software group. Justin holds a B.A. from Claremont McKenna College, a Ph.D. from the University of Oregon and an Executive Management certificate from Northwestern University's Kellogg School of Management.


  • Rique Lucero 8 years ago

    I used sheets on my android phone. To be able to use the candlestick trend chart, I only get to use 4 arguments, not 5 as per the book. It asks for the min, open, close and max. So I used the min value, Q1 for open, Q3 for closed and max value. I then created the mean and median values separately so they will be charted next to their respective data group (belmont, mean, median….eside,mean,median) would this be okay for tests, or do I HAVE to have the median in the candlestick?

    • Justin 8 years ago

      Sounds like you found a good trick for making boxplots. If the visualization works well in terms of showing the spread of the data and how the different neighborhoods compare then I’m good with it.

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