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I am trying to run batch regressions on a pretty sizable set of data. About ~1M distinct groups of data, each wtih 30-500 x,y pairs.
A batch macro with a linear regression works ok - but it is really slow. Started at about 2-3s per regression. After stripping out bunch or reporting from the macro, I am down to ~2s. This is still feels quite slow compared to something purpose built.
Has anyone experimented with higher speed versions that just dump out m,b, & r2?