Classifier.Mean Method

function Mean(const a: array of double): double;

Compute average of the a array.

Returns: double

Remarks:

Computes average of values in the a array.

Examples

var a: Matrix;
    b: double;
begin
    a := [[1],[2],[3],[4]];
    b := a.Mean; // b = 2.5
end;

var
    a: Matrix;
    result: double;
begin
    a := [[1.0, 2.0], [3.0, 4.0]];
    result := a.Mean;
    if Abs(result - 2.5) > 1e-10 then
        raise Exception.Create('Matrix.Mean: expected 2.5, got ' + result.ToString);
end;