Recent content by mulvamj

  1. M

    [SigmaPlot] - X units when regressed on time?

    My data structure follows: X data are dates, say March 29, 2016 to July 12, 2016. There are 105 days in this date range. Y data are percentages (0-100% of nitrogen released from a slow release fertilizer). I run a regression (quadratic polynomial), and it gives me an equation of...