CR always minimizes mean job flow times.
A priority index is computed using the components: CR = (due date—cutting-edge date)/(production lead time final). Jobs with a smaller crucial ratio are given precedence over people with larger critical ratios. FOR(fewest operations ultimate). that is a version of the SPT rule.
If this rule is used for sequencing, the activity with the lowest CR is scheduled first. A CR less than 1 indicates that the task will be overdue, and a CR greater than 1 shows that the process may be finished beforehand of the due date if no unexpected postponement occurs.
Learn more about the priority index here: https://brainly.com/question/26355510
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