InKanban, one of the most effective ways to reduce variability in cycle time is by ensuring a consistent size of work items. According to thePMI Agile Practice Guide (Section 5.7 Flow-based Agile - Kanban), maintaining uniformity in work item size helps stabilize the system and supports reliable forecasts. Large or complex stories increase variability and unpredictability.
Mike Griffiths in thePMI-ACP Exam Prep Book (Chapter 6: Value-Driven Delivery)recommendssplitting large user storiesand maintaining size thresholds for items on the board to ensure flow efficiency.
OptionCaligns best with this practice:establishing a policyfor breaking down large stories and adjusting WIP accordingly will help standardize flow, minimize cycle time variation, and improve predictability.
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