private static void InsertStandardDeviationFormula(XWPFParagraph p) { var math = p.CreateOMath(); math.CreateRun().SetText("\u03c3="); var rad = math.CreateRad(); rad.Degree.CreateRun().SetText("2"); var f = rad.Element.CreateF(); f.FractionType = ST_FType.bar; f.Denominator.CreateRun().SetText("n-1"); var nary = f.Numerator.CreateNary().SetSumm(); nary.Superscript.CreateRun().SetText("n"); nary.Subscript.CreateRun().SetText("i=1"); var ssup = nary.Element.CreateSSup(); ssup.Element.CreateRun().SetText("("); var ssub = ssup.Element.CreateSSub(); ssub.Element.CreateRun().SetText("X"); ssub.Subscript.CreateRun().SetText("i"); ssup.Element.CreateRun().SetText("-"); var acc = ssup.Element.CreateAcc(); acc.AccPr = "¯"; acc.Element.CreateRun().SetText("X"); ssup.Element.CreateRun().SetText(")"); ssup.Superscript.CreateRun().SetText("2"); }