Problem
To qualify for work on specialized machine plans, 12 candidates were subjected to a form perception test, a test used to assess the ability to perceive relevant details, reproductions or written documents, to compare visually, to make distinctions and to see the slight differences in shapes and shade of the designs as well as line widths. The results of these 12 candidates have been reported below (ordered values):
77 77 79 91 91 93 94 95 96 97 99 106
What is the sixth decile of this series?