[Gnuplot-info] Help request - linear regression giving screwy results

[Eric R. <es...@th...>]

I've been attempting to do trend analysis on U.S. smartphone marketshare.
You can see some of my successful visualizations at 

    http://www.catb.org/esr/comscore/

The problem is that I tried to do a linear-regression fit on Android's
market share and got screwy results.  

To reproduce, save the enclosed comscore.dat and comscore-report, then
do "comscore-report -p Android foo.png" and display foo.png.  What I
see is that the linear-fit line passes through one datapoint but is nowhere
near close to the right slope.  I don't get an error message.

Thanks in advance,
-- 
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>