Java Utililty Methods mean

void adjustVariance(double[] x, double newVariance, double currentMean)
adjust Variance

adjustStandardDeviation(x, Math.sqrt(newVariance), currentMean);

double calculateMeanOfArrayListDouble(List dList)
calculate Mean Of Array List Double

double sum = 0;
for (double x : dList) {
 sum += x;
return sum / dList.size();

double[] getMean(ArrayList> lists)
get Mean

int numAtts = lists.size();
assert (numAtts > 0);
int numInsts = lists.get(0).size();
assert (numInsts > 0);
double[] Means = new double[numAtts]; 
for (int i = 0; i < numAtts; i++) {
 double att1 = 0;
 for (int j = 0; j < numInsts; j++) {
...

double getMean(ArrayList beats)
get Mean

double acum = 0;
for (Double d : beats)
 acum += d;
double mean = acum / beats.size();
return mean;

double getMean(final Integer[] values)
get Mean

return getMean(Arrays.asList(values));

double getMeanValue(ArrayList values)
get Mean Value

if (values.isEmpty()) {
 return -1.0;
double sum = 0.0;
for (Double value : values) {
 sum += value;
return sum / values.size();
...

double Mean(ArrayList values)
Calculates the mean (average) value from a list of numeric values.

if (values.size() == 0)
 throw new Exception("Cannot determine mean on an empty list.");
return Sum(values) / (double) values.size();

float mean(Collection terms)
mean

if (terms.isEmpty()) {
 return 0;
float total = 0;
for (Number term : terms) {
 total += term.doubleValue();
return ((float) total) / terms.size();
...

double mean(double a, double b)
Returns the mean of a double value.

return (a + b) / 2;

double mean(double ask, double bid)
mean

return Math.abs((ask + bid) / 2);