Information:

Environment

  • Dynatrace Portal
  • Interactive Charts

 

Symptoms

When the Calculation selection for an Interactive Chart is changed to Standard Deviation, all the data points vanish.

Solution

The Average calculation is the arithmetic mean of all data points in a particular time frame.

Standard Deviation calculates how closely the total values are clustered around the mean (average).

Standard Deviation can only be displayed if there is more than one data point available for a time frame: i.e., the test ran against more than one node. If your test is only running against a single node, there is no deviation from the mean, and the chart will not display any data.

 

 

 

 

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