Method populationVariance

output/java_guava/1.4.16/Stats.java:233–242

Returns the population variance of the values. The count must be non-zero. This is guaranteed to return zero if the the dataset contains only exactly one finite value. It is not guaranteed to return zero when the dataset con

()

  public double populationVariance() {
           checkState(count > 0);
           if (isNaN(sumOfSquaresOfDeltas)) {
             return NaN;
           }
           if (count == 1) {
             return 0.0;
           }
           return ensureNonNegative(sumOfSquaresOfDeltas) / count();
  }

  /**
   * Returns the