AItest

1

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         if (x > max) {
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             max = x;
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         }
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     }
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     public long numSamples() {
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         return mN;
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     }
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     public double mean() {
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         return mM;
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     }
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     public double variance() {
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         return mN > 1 ? mS / mN : 0.0;
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     }
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     public double varianceUnbiased() {
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         return mN > 1 ? mS / (mN - 1) : 0.0;
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     }
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     public double standardDeviation() {
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         return Math.sqrt(variance());
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     }
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     public double standardDeviationUnbiased() {
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         return Math.sqrt(varianceUnbiased());
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     }
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     public double min() {
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         return min;
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     }
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     public double max() {
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         return max;
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     }
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     public double sum() {
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         return sum;
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     }
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     private static final Comparator<String> NULL_SAFE_STRING_COMPARATOR = Comparator.nullsFirst(String::compareTo);
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     @Override
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     public int compareTo(Stats stats) {
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         return Comparator.comparing(Stats::getX2, NULL_SAFE_STRING_COMPARATOR)
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                 .thenComparing(Stats::getX1)
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                 .compare(this, stats);
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     }
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}
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