Method GetStdDev

library/cpp/linear_regression/welford.cpp:93–99

}

double TDeviationCalculator::GetStdDev() const {
    const double sumWeights = GetSumWeights();
    if (!sumWeights) {
        return 0.;
    }
    return sqrt(GetDeviation() / sumWeights);
}

double TDeviationCalculator::GetSumWeights() const {
    return MeanCalculator.GetSumWeights();