According to the PMBOKGuide, the Control Schedule process is the process of monitoring the status of the project activities to update project progress and manage changes to the schedule baseline to achieve the plan.
* Variance Analysis: This is a key tool and technique used in this process. It involves comparing the planned dates (the baseline) to the actual start and finish dates to determine if there is a deviation.
* Specific Metrics: In schedule control, variance analysis focuses on:
* Schedule Variance (SV): $SV = EV - PV$
* Schedule Performance Index (SPI): $SPI = EV / PV$
* Purpose: By performing variance analysis, the project manager can determine the cause and degree of variance relative to the schedule baseline and decide whether corrective or preventive action is required.
Analysis of Other Options:
* A. Performance measure: While performance measurement is the goal of the process, " Performance Reviews " or " Data Analysis " are the technical terms for the tools used.
* B. Baseline schedule: The schedule baseline is a primary input to the Control Schedule process, used as the reference point for comparison, but it is not a " technique " itself.
* C. Schedule network analysis : This is a technique primarily used in the Develop Schedule process to create the initial schedule model; it is not the primary tool for controlling it once execution begins.