Java 扩展统计弹性搜索标准偏差总体还是样本?
elasticsearch extended stats标准偏差是作为样本标准偏差还是总体标准偏差计算的?查看源代码,方差和标准偏差似乎是总体值:Java 扩展统计弹性搜索标准偏差总体还是样本?,java,
elasticsearch,statistics,Java,
elasticsearch,Statistics,elasticsearch extended stats标准偏差是作为样本标准偏差还是总体标准偏差计算的?查看源代码,方差和标准偏差似乎是总体值: @Override public double getVariance() { return (sumOfSqrs - ((sum * sum) / count)) / count; } @Override public double getStdDeviation() { return Math.sqrt(getVariance(
@Override
public double getVariance() {
return (sumOfSqrs - ((sum * sum) / count)) / count;
}
@Override
public double getStdDeviation() {
return Math.sqrt(getVariance());
}