2525218 - Wrong Overall Calculated Rating in PM Form

• Calculated rating showing in the form is incorrect based on the average rating formula which is the summation of rating times weight.
• The ratings are coming only from one section of the form for instance the goal section of the form.

SAP SuccessFactors Performance Management

Considering below scenario:

• Ratings are only from the Goal section of the form with 100% section weight;
• Below are the 12 goal ratings and weights:

            Rating               Weightage

           ======          =======

            6.0                    10.0%

            6.0                    10.0%

            4.0                    10.0%

            4.0                    10.0%

            4.0                    15.0%

            10.0                  2.5%

            5.0                    5.0%

            7.5                    2.5%

            5.0                    10.0%

            8.0                    10.0%

            3.0                    5.0%

            7.0                    10.0%

Calculated rating shows 6.47 instead of 5.44 following the average formula.

• Goal section has a different rating scale used in the form.
• The rating will be normalized to the main rating scale configured in the form.

• The Calculated Rating that will be displayed in the form is the normalized rating.
• The calculated rating using the goal rating scale will be normalized to the main rating scale of the form.
• Below is explanation how it works for the example scenario above:

Main Rating Scale of the form: (4,6,7,8,9) - This is the Rating Scale selected in Admin Center > Manage Templates > General Settings.

Rating Scale of the Goal Section: (1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10) - This is the Rating Scale selected in Admin Center > Manage Templates > Edit Fields and Section > Goal Section > Show advanced options...

Normalization Formula: (Rating - Section_ScaleMin) / (Section_ScaleMax - Section-ScaleMin) = x

Normalized Rating = x * (ScaleMax - ScaleMin) + ScaleMin

where Rating= Rating calculated using the average formula (5.44)

Section_ScaleMin = Minimum rating of Section rating scale

Section_ScaleMax = Maximum rating of Section rating scale

ScaleMax = Maximum rating of Form rating scale

ScaleMin = Minimum rating of Form rating scale

In this case, the calculation goes as below:
(5.44 - 1.0) / (10 - 1) = (4.44 / 9 ) = 0.4933333
0.493333 * (9 - 4) + 4 = 6.466666

Hence the overall calculated rating is displayed as 6.47

KB article 2078768 - Ratings; Understanding How Scores use Rounding; Scale Adjustments; Normalizations; Decimal Places - Performance Management

SF, success factors, PMGM, PM, GM, wrong, normalization , KBA , LOD-SF-PM-RAT , Ratings and Weights , Problem