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Question:

You work as a project manager for SubZero Delights, a company that provides extraordinary experiences to travelers. Your current project involves the development of a smart phone app that automatically picks up a customer’s GPS coordinates to offer tailored resources and suggestions. You take time to contemplate the project complexity and decide to plot the degree of uncertainty against requirement uncertainty. What model are you practicing?

A Stacey Complexity Model
Explaination

You can plot the degree of certainty (or agreement) about the complexity elements such as requirements or team skills on a Stacey Complexity Model. The degrees are measured from low uncertainty or agreement to high uncertainty or lack of agreement. This model displays levels of uncertainty from low to high on both the x- and y-axes, or it may show levels of uncertainty on the x-axis and agreement levels on the y-axis.