TrendLine

The speed good app the ingenier app is util                 Need Improve speed inicializacion

First of allits the only one of its kind available at itunes apps Secondlyits easy to use gets the correct linear regression answers andvery importantprovides the fitting parameters as well as the best fit Thirdly it permits different fits to live simultaneously under different names any of them subject to access and updates Fourth its not just a fit to equally spaced x values it permits arbitrarily spaced x data Fifth theres nothing else available that can do any of thisohbut I said that already A nobrainer If you need a leastsquares fit to a linear model that is as general as it needs to be and easily used then not only do you have only this one choice but its a good one Thanks to the author              Dr

1 star for usefulness needs mor functions 2 stars for stability 1 star for design Good design but needs way more functionality Features Ability to adjust the range of data MAX Minimum Median calculation Durbin Watson Ratio Residual range AIC Ability to change color of graph lines To be continued              Needs more functions