I'm not sure that the lawyers would ever build a case on a quantitative analysis done by the lawyer. Not 100% sure. It's an interesting question. My suspicion is that they would use a credentialed "expert" to do any analysis submitted as evidence.

A lot of lawyers do "doc review," which is often about analyzing documents for data relevant to the case. I think natural language processing is being used to augment this process. Aside from that, I've haven't gotten the sense that my facility with analysis would be as useful as one might think.