Recommend an Open Source .NET Statistics Library [closed]

Answer 1

Have a look at MathNet it is not specifically for statistics, but there might be useful functionality for what you want

Answer 2

If you just need to do some one-off number crunching, a spreadsheet is far and away your best tool. It's trivial to spit out a simple CSV file from C#, which you can then load up in Excel (or whatever):

class Program
{
    static void Main(string[] args)
    {
        using (StreamWriter sw = new StreamWriter("output.csv", false, Encoding.ASCII))
        {
            WriteCsvLine(sw, new List<string>() { "Name", "Length", "LastWrite" });

            DirectoryInfo di = new DirectoryInfo(".");
            foreach (FileInfo fi in di.GetFiles("*.mp3", SearchOption.AllDirectories))
            {
                List<string> columns = new List<string>();
                columns.Add(fi.Name.Replace(",", "<comma>"));
                columns.Add(fi.Length.ToString());
                columns.Add(fi.LastWriteTime.Ticks.ToString());

                WriteCsvLine(sw, columns);
            }
        }
    }

    static void WriteCsvLine(StreamWriter sw, List<string> columns)
    {
        sw.WriteLine(string.Join(",", columns.ToArray()));
    }
}

Then you can just 'start excel output.csv' and use functions like "=MEDIAN(B:B)", "=AVERAGE(B:B)", "=STDEV(B:B)". You get charts, histograms (if you install the analysis pack), etc.

The above doesn't handle everything; generalized CSV files are more complex than you might think. But it's "good enough" for much of the analysis I do.