# StatisticsNonlinearFit not work in v11.2

I have the following problem. I have to evaluate data using a nonlinearfit to extract certain values. Luckily there is already a mathematica notebook avaible online which i should use (according to my superviser). Now running this notebook doesn't work out for me using mm 11.2. I asked myself if have to rewrite some of the cells following the latest changes (like NonlinearRegress or BestFitParameters). On the other hand i have read through other forum posts and it seems as basically older notebook versions should run without problems despite the "old syntax". Maybe someone can help me in this matter? Many thanks!!

• Opening the notebook, a problem is in the first line: << StatisticsNonlinearFit the error being that it cannot open this package. It's not obvious what commands are related to this package. But to try it out, one would need data. There is a command: NonlinearRegress which is probably the old version of NonlinearModelFit. – bill s Oct 9 '17 at 12:36
• @bills One can find the compatibility information by searching StatisticsNonlinearFit in the document. This is a package in v5.2. – xzczd Oct 9 '17 at 13:04