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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Cumulative-standard-deviation/Java/cumulative-standard-deviation.java Normal file
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public class StdDev {
int n = 0;
double sum = 0;
double sum2 = 0;
public double sd(double x) {
n++;
sum += x;
sum2 += x*x;
return Math.sqrt(sum2/n - sum*sum/n/n);
}
public static void main(String[] args) {
double[] testData = {2,4,4,4,5,5,7,9};
StdDev sd = new StdDev();
for (double x : testData) {
System.out.println(sd.sd(x));
}
}
}