Overview of weighting (Summary tab)

The Summary tab allows you to select the weighting for statistical calculations:

• Time-weighted

  Default. Weights each event value by the length of time over which it applies.

• Time-weighted continuous

  Time-weights values, but does all interpolation between values as if the values represent continuous data, (standard interpolation) regardless of whether the attribute is stepped.

• Time-weighted discrete

  Time-weights values, but does all interpolation between values as if the values represent discrete, unrelated values (stair step plot) regardless of the attribute is stepped.

• Event-weighted

  Weights each event equally. This method requires at least one event in a time range (two events for standard deviation calculations). By default, events at the boundary of the calculation are handled as follows:

  • use events at both boundaries when there is only one calculation interval

  • include events at start time in multiple intervals and the intervals are in ascending time order

  • include events at the end time in multiple intervals and the intervals are in descending time order

• Event-weighted - Exclude Earliest Event

  EventWeighted, except that the event at the start time (earliest time) of an interval is not used in that interval.

• Event-weighted - Exclude Most Recent Event:

  EventWeighted, except that the event at the end time (most recent time) of an interval is not used in that interval.

• Event-weighted - Include Both Ends:

  Events at both ends of the interval boundaries are included in the event-weighted calculation.