{
    using namespace RooFit;
    
    // observable/parameter/PDF construction
    RooRealVar x("x", "random variable", 0.0, 1.0);
    RooRealVar mu("mu", "mean parameter", 0.5, 0.0, 1.0);
    RooRealVar sigma("sigma", "width parameter", 0.1, 0.0, 0.3);
    RooGaussian gaus("gaus", "Gaussian PDF", x, mu, sigma);
    
    // Generate a random set
    RooDataSet* data = gaus.generate(x,10000);

    // Fit pdf to the random data
    RooFitResult *res = gaus.fitTo(*data, Save(true),Minos(true));
    res->Print("v");

    // plot the data & PDF
    RooPlot* frame = x.frame();
    data->plotOn(frame);
    gaus.plotOn(frame);
    frame->Draw();
}