Thank you to the many people who responded to my query. That you were
in favour of Stata was expected, but that the responses addressed my
questions directly and thoughtfully answered the unspoken question: on
the extent and nature of Stata support, both from the company and from
its (evidently diverse) community. Not only the direct responses but
the run of unrelated postings were part of the positive answer.
I have a demo copy of JMP and am further exploring Stata through my
daughter's university access. However, my conclusion is already there.
I will be buying Stata and using Data Desk's EDA features when I feel
that need.
Thank you all for your assistance.
regards
David Vaughan
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