This curve is generally nonlinear because the schedule does not grow linearly with effort. Such function can be determined from data from completed projects using statistical techniques like fitting a regression curve through the scatter plot obtained by plotting the effort and schedule of past projects.
One method to determine the overall schedule is to determine it as a function of effort. The objective is to fix a reasonable schedule that can be achieved (if suitable number of resources are assigned). Empirical data also suggests that no simple equation between effort and schedule fits well. Similarly, no one would execute the project in 28 months with 2 people.) In other words, once the effort is fixed, there is some flexibility in setting the schedule by appropriately staffing the project, but this flexibility is not unlimited. (But a schedule of 1 month with 56 people is not possible. Kelebihan Upgret Tanaka T22 HD Mario Bomberman more.Ī schedule of 7 months with 8 people is also possible, as is a schedule of approximately 9 months with 6 people. For example, for a project whose effort estimate is 56 person-months, a total schedule of 8 months is possible with 7 people. However, for a project with some estimated effort, multiple schedules (or project duration) are indeed possible. This is not even approximately true of software.”. Man and months are interchangeable only for activities that require no communication among men, like sowing wheat or reaping cotton. This is not true for software projects-there are dependencies between tasks (e.g., testing can only be done after coding is done), and a person performing some task in a project needs to communicate with others performing other tasks. Table(3):Levels of selected software language relative to Assembler language. Cost estimates are need throughout software life cycle. Software Engineering Cost Estimation Using COCOMO II Model. Person and months can be interchanged arbitrarily only if all the tasks in the project can be done in parallel, and no communication is needed between people performing the tasks. However, as is well known now, person and months are not fully interchangeable in a software project. With the effort estimate (in person-months), it may be tempting to pick any project duration based on convenience and then fix a suitable team size to ensure that the total effort matches the estimate. After establishing a goal on the effort front, we need to establish the goal for delivery schedule.
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