Head to head comparison of vendors

Use the Head to Head Compare view to compare the ratings of two vendors.

Select a vendor from the choice list to compare against the current vendor's trailing twelve month (TTM) ratings. The Diff column displays the difference between each vendor's most recent TTM ratings. The scorecard displays 3 years of ratings for the comparison record. All ratings are expressed as averages.

Figure 1. Vendor scorecard head to head

Overall Rating

The Overall Rating is calculated as:
(sum of normalized values in category result) / (number of assessment groups)
In the following example, the calculation is
(2.13 + 2.86 + 3.79 + 1.43 + 2.39 + 3.7) / 2 = 8.15
Figure 2. Normalized values
Figure 3. Overall Rating on the Group Scorecard