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.


  • Chris Henager 7 years ago

    I’m having a hard time writing the formula for y intercept into python. it keeps giving me a syntax error. This is how i tried to input it- y intercept = (SumY/n – slope * SumX/n)

  • Justin 7 years ago

    If you are typing “y intercept” with a space it won’t work. Take out the space.
    The rest looks okay. I would write it like this:

    yintercept = (SumY/n) – slope*(SumX/n)

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