The importance of the DO's role in making annual merit assessments was discussed in the previous chapter, The average of a member's last three annual assessments, is used to calculate the so-called Z-score.
Ukubaluleka kwendima kamenzi kukwenza uvavanyo lonyaka lwaxoxwa kwisahluko esigqithileyo, i-avareji yelungu lovavanyo lwesithathu lonyaka lusetyenziselwa ukubala into ekuthiwa linqaku uZ.