Activity name. Activities can be named. In PERT, the name is not used, whereas in CPM (precedence list), the names are critical. In PERT, the “real” name of an activity is given by its starting and ending node labels.
Starting node. The number of the node at which the activity starts is to be given here. Remember, the numbers in a PERT diagram serve as labels rather than numerical values. The labeling is arbitrary. That is, the first node can be 1 or 2 or 90.
Ending node. The number of the node at which the activity ends is to be given here. The number cannot be the same as the starting node number. Two activities cannot have the same pair of starting and ending node numbers. Also, transitivity must be obeyed. That is, an error will occur if laws of transitivity are violated, such as by the pairs (1, 2; 2, 3; 3, 1).
Time estimate. In the single-time problem, it is necessary to give only one time estimate for each task.
Optimistic time. This appears only in the three-time estimate option from the submenu.
Most likely time. This time must be entered in either the one- or three-time estimate version.
Pessimistic time. This appears only in the three-time estimate version.
Activity name. Activities can be named. In PERT, the name is not used, whereas in CPM (precedence list), the names are critical. In PERT, the “real” name of an activity is given by its starting and ending node labels.
Starting node. The number of the node at which the activity starts is to be given here. Remember, the numbers in a PERT diagram serve as labels rather than numerical values. The labeling is arbitrary. That is, the first node can be 1 or 2 or 90.
Ending node. The number of the node at which the activity ends is to be given here. The number cannot be the same as the starting node number. Two activities cannot have the same pair of starting and ending node numbers. Also, transitivity must be obeyed. That is, an error will occur if laws of transitivity are violated, such as by the pairs (1, 2; 2, 3; 3, 1).
Time estimate. In the single-time problem, it is necessary to give only one time estimate for each task.
Optimistic time. This appears only in the three-time estimate option from the submenu.
Most likely time. This time must be entered in either the one- or three-time estimate version.
Pessimistic time. This appears only in the three-time estimate version.
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