What statistical functions come native to C# and T-SQL? [closed]

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I'm a fledgling DBA dealing with some medical data. While I've not yet gotten to the point of needing top-tier statistical methods, I will soon. I plan to put several databases online and searchable for whatever 开发者_开发问答the user wants. My question is, besides average, standard deviation, etc. does T SQL have any other statistical functions? And for C#? Are free libraries for things such as this readily available, or would I have to make it? Thanks!

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I don't know about T-SQL, but in C# there is dnAnalytics which offers various functions concerning descriptive statistics. I've used it on various occasions and was very satisfied with the results achieved, performance and overall library design.