Explanation/Reference:
Explanation:
Control charts, are used to determine whether or not a process is stable or has predictable performance.
Upper and lower specification limits are based on requirements of the agreement. They reflect the maximum and minimum values allowed. There may be penalties associated with exceeding the specification limits. Upper and lower control limits are different from specification limits. The control limits are determined using standard statistical calculations and principles to ultimately establish the natural capability for a stable process. The project manager and appropriate stakeholders may use the statistically calculated control limits to identify the points at which corrective action will be taken to prevent unnatural performance. The corrective action typically seeks to maintain the natural stability of a stable and capable process. For repetitive processes, the control limits are generally set at ±3 s around a process mean that has been set at 0 s. A process is considered out of control when: (1) a data point exceeds a control limit; (2) seven consecutive plot points are above the mean; or (3) seven consecutive plot points are below the mean. Control charts can be used to monitor various types of output variables.
Although used most frequently to track repetitive activities required for producing manufactured lots, control charts may also be used to monitor cost and schedule variances, volume, and frequency of scope changes, or other management results to help determine if the project management processes are in control.

Explanation/Reference:
Explanation:
Process: 6.6 Develop Schedule
Definition: The process of analyzing activity sequences, durations, resource requirements, and schedule constraints to create the project schedule model.
Key Benefit: The key benefit of this process is that by entering schedule activities, durations, resources, resource availabilities, and logical relationships into the scheduling tool, it generates a schedule model with planned dates for completing project activities.
Inputs
1. Schedule management plan
2. Activity list
3. Activity attributes
4. Project schedule network diagrams
5. Activity resource requirements
6. Resource calendars
7. Activity duration estimates
8. Project scope statement
9. Risk register
10.Project staff assignments
11.Resource breakdown structure
12.Enterprise environmental factors
13.Organizational process assets
Tools & Techniques
1. Schedule network analysis
2. Critical path method
3. Critical chain method
4. Resource optimization techniques
5. Modeling techniques
6. Leads and lags
7. Schedule compression
8. .Scheduling tool
Outputs
1. Schedule baseline
2. .Project schedule
3. Schedule data
4. Project calendars
5. Project management plan updates
6. Project documents updates