The Calibration report measures a participant's score of an interaction against the "First Score". This measure is a value between -100 to 100 and is the difference between the First Score and the participants score. (see Calibration report for more info).

6.6 Calibration Trend will show you the average of this "Variation" measure for a participant over time across a given interval.

Calibrations Trend is found within the Analytics page under the “Groups” heading

Click the date range banner

to open the filters menu. Set your date range and Group/Team/Evaluator filters then click Submit. The data which matches your filter criteria will be returned.

Example:

A calibration list was built in Week 41 and Alicia scored three of the interactions in the list. Her results were:
​
Interaction 1
​First Score - 61.90%
Caitlin's Score - 52.38%
Variation = -9.52

Interaction 2
​First Score - 80%
Caitlin's Score - 100%
Variation = 20

Interaction 3
​First Score - 97.67%
Caitlin's Score - 97.67%
Variation = 0
​
We can see from the Calibration Trend report that Alicia's average "Variation" in Week 41 was 3.49
The calculation being used is SUM of variations / (divided by) number of interactions
​So (-9.52 + 20 + 0) / 3 = 3.49