Re: Calculating with imprecise values
- Posted by Juergen Luethje <j.lue at gmx.de> Dec 14, 2005
- 619 views
Al Getz wrote: > I've used so called 'sensitivity' analysis in the past to measure changes > in functions with respect to a given variable and this helped understand > things better sometimes especially when human error is involved. > > For example.... > > for the equation with some function F: > y=F(a,b,c) > > the sensitivity with change of parameter 'a' might be 100 times as great > as with parameter 'b', and perhaps the sensitivity with respect to 'c' > might be 1000 times lower than with 'a', meaning y hardly changes > with 'b' or 'c' but changes quite a bit with parameter 'a'. Thus, > the error in measurement in 'b' or 'c' doesnt matter as much as with > the error in 'a'. This would mean great care should be used in measuring > 'a' while with 'b' or 'c' you might get away with estimating from other > parameters or whatever. Interesting! Do you have a link at hand that explains sensitivity analysis more in detail?Regards, Juergen