5.4.3.38 VarianceSample

The VarianceSample Aggregate defined in Table 86 retrieves the square of the standard deviation. Its behaviour is the same as the StandardDeviationSample Aggregate. Unless otherwise indicated, qualities are Good, Calculated.

This calculation is for a sample population where the calculation is done on a subset of the full population. Use VariancePopulation to calculate the variance of a full set of data (5.4.3.40).

Table 86 – VarianceSample Aggregate summary
VarianceSample Aggregate Characteristics
TypeCalculated
Data TypeDouble
Use BoundsNone
TimestampStartTime
StatusCode Calculations
Calculation Method

Custom

Always Good

Partial

Set Sometimes

If an interval is not a complete interval

CalculatedSet Always
InterpolatedNot Set
RawNot Set
Multi ValueNot Set
StatusCode Common Special Cases
Before Start of DataBad_NoData
After End of DataBad_NoData
No Start BoundNo special handing required
No End BoundNo special handing required
Bound Bad No special handing required
Bound UncertainNo special handing required