Scenario “Tax system”

The tax system needs to be updated due to new legislation. For a person with a salary of less than €
20.000 and who is married, the tax needs to be re-calculated. If the person also has more than two
and less than five children, an additional 10% reduction is applicable. A SUMI test has been
performed on the user-interface of the tax system. The resulting SUMI graph is presented below:
Which of the following statements is NOT correct?

A.
The SUMI scores are above market average

B.
The SUMI scores show a positive result regarding user-satisfaction

C.
The standard deviation of all SUMI scales is much too large

D.
Especially the SUMI score regarding Affect is high which will ease the deployment process