What is Task Duration Estimation

Task Duration Estimation is an examination and appraisal of a task against time constraint to develop an estimate that specifies a limited and definite period or duration required for the task to achieve its goals and desired outcomes.

Estimating task duration involves a consistent process that comprises several basic steps, such as:

• Define a task to be estimated
• Identify time-related requirements
• Decompose the task into smaller elements (sub-tasks)
• Estimate time length for each of the elements
• Determine duration of the task as total of individual time lengths
• Develop an estimate that specifies the task duration

These steps are generic and can be used in estimating duration of most of the tasks and activities. However, in some cases duration estimation requires specific methods and techniques (for example, when there are high risks affecting a task, or when there is plenty of historical data to be used in estimating present tasks). Here are some examples of duration estimation methods:

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