Java Utililty Methods List std

double result = 0;
double mu = average(iNumbers);
for (Double number : iNumbers)
    result += Math.pow(number - mu, 2);
result /= iNumbers.size();
return Math.sqrt(result);

Double accum = 0.0;
Double dev = 0.0;
Double accum2 = 0.0;
Double len = (double) vector.size();
for (Double float1 : vector) {
    dev = float1 - avg;
    accum += dev * dev;
    accum2 += dev;
...

if (nums == null || nums.size() == 0) {
    throw new IllegalArgumentException();
return stdDev(nums, 0, nums.size());

if (observations.size() == 1) {
    return 0.0;
double mean = 0.0;
for (Double d : observations) {
    mean += d;
mean = mean / observations.size();
...

return Math.sqrt(variance(list));

return stdev(values, mean(values));

List<Double> doubles = new ArrayList<Double>(elements.size());
for (Integer n : elements) {
    doubles.add(new Double(n));
return std(doubles);

double mean = meanDouble(list);
double variance = 0;
for (int i = 0; i < list.size(); i++) {
    double a = Math.pow(list.get(i) - mean, 2);
    variance += a;
if (populationStandardDeviation) {
    return variance / list.size();
...