Rules Reference

Customize how Bill-Watch detects anomalies

Bill-Watch uses a library of mathematical formulas to spot unusual usage patterns. Each formula applies a different statistical or threshold-based test.  Click any rule name below to learn more or jump straight into the Simulator Rules sandbox.

Amount-Based Formulas

• AmountByLast

• AmountByMax

• AmountByMin

• AmountByAverage

• AmountByMedian

Percentage-Based Formulas

• PercentageByLast

• PercentageByMax

• PercentageByMin

• PercentageByAverage

• PercentageByMedian

Statistical Formulas

• ZScore

• ModifiedZScore

• GrubbsTest

• InterquartileRange

Trend & Regression Formulas

• RegressionResidual

• TrendDeviation