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# How to automate the LINEST function in vba to find the best fit for a second order or higher polynomial?

Posted on 2009-04-08

I have hundreds of data sets showing change (y) over time (t) at different locations. I am attempting to plot the (y,t) data for each location and fit a second order polynomial line of regression to each of the data sets. I would like to automate the LINEST function in VBA to accomplish this by finding the constants C1, C2, and b; i.e. y = C1*t^2 + C2*t + b. I would also like the statistical data that LINEST provides.

Thanks, BL