refined Posted July 20, 2010 Share Posted July 20, 2010 I never was a math major, so bare with me Example scenario: Date - Number 7/15/2010 - 100 7/16/2010 - 70 7/17/2010 - 60 7/18/2010 - 55 7/19/2010 - 52 7/20/2010 - ?? 7/21/2010 - ?? etc I am trying to estimate what the Number value could be for an input date in the future. Can somebody shed some light? Quote Link to comment https://forums.phpfreaks.com/topic/208255-statistical-number-estimation-from-sample-data-set/ Share on other sites More sharing options...
corbin Posted July 20, 2010 Share Posted July 20, 2010 http://en.wikipedia.org/wiki/Regression_analysis How to actually implement the math in PHP though, I have no idea. (I can do it on a graphing calculator, but that's about it.) I would imagine the easiest approach would be to find the equation or algorithm for each type of regression (linear, x^n, exponential, so on), then try all of them and check accuracy. Quote Link to comment https://forums.phpfreaks.com/topic/208255-statistical-number-estimation-from-sample-data-set/#findComment-1088458 Share on other sites More sharing options...
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