The 5.1.x release has brought an enhancement in making statistics. I'm a sociologist, and for me such feature is a big step forward for Calc development.
But I've got an idea how to make it even more better: so, what if integrate the logic and "interface" of GNU PSPP (https://www.gnu.org/software/pspp/) into Calc? PSPP is recognized as a GNU clone of IBM SPSS. IBM SPSS is one of the leaders in statistical packages. As far as I found, the work of PSPP is quite great; the working dialogs and parameters let you make more statistical stuff. PSPP has a support for ODF files.
F.e., in Calc the regression part or part for Candell/Spearmen tests are done quite poorly, and need for functionality. Instead of making "bycicles" we could use PSPP as an additional engine for that. And that will so cool, that MSO Excel will be far behind :)
What do you think about "combining" PSPP and Calc somehow?
I see here two variants: 1)making some ways to interact between these programs.
2)Or writing a guide for pro-statistical analysis (I can do that. I've got an experience in both IBM SPSS, GNU PSPP and Calc of course).
I have set the bug's status to 'NEW' because it is a valuable idea.