|  | Class | Description | 
            
              |   | DeviceStatisticsHelperT | Helper class for calculating device statistics. | 
            
              |   | StatisticsEngine | Represents the engine that computes statistics within applications of the TimeSeriesFramework. | 
            
              |   | StatisticValueState | Represents an object that can track the current and previous
            state of a statistic and get the difference between them. | 
            
              |   | StatisticValueStateCache | Caches statistic values to provide the difference between the
            current and previous values of any statistic given that
            statistic's source, name, and current value. |