Activity

Activity is a noun that has a number of similar, but distinct meanings. First and foremost, the term is used to indicate the state of being “active”, and in conjunction with that, and specific movement of energy or liveliness. It also can refer to a specific event, happening, or occurrence in which participation is expected. Activities can be physical in nature, mental, or a combination of the above. Activity can refer to the overall project in a broad sense (i.e., The team was about halfway done with the activity, having only 3 more deliverables remaining until completion), or activity can refer to specific elements within a larger scale project (i.e.,, The project was almost completed, with only one more activity remaining before the deliverables were ready for delivery). Activity can also represent the state of motion among team members who are in the process of working on specific elements of a project (i.e., There was activity among all team members as they rushed to complete the project).

This term is defined in the 3rd and the 4th edition of the PMBOK.

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1. Activity Duration

   Activity duration is a noun that represents the specific quantity of time that exists between the designated start time and end time of a scheduled activity. For further elaboration on this definition, please see the definitions for actual duration, original duration, and remaining duration. Activity duration should be carefully measured from the start date to [...]

2. Activity Attributes

   Activity attributes typically refers to the specific components that make up an activity. These can include descriptive factors of the activity at the onset, or can also refer specific characteristics that may become relevant at a later phase of an activity (i.e.,, When step 4 is complete, then the activity attributes will change to X, [...]

3. Activity Duration Estimating

   Activity duration estimating represents the act of quantifying the amount of time that it is anticipated the activity will take to complete. This phase of the project, that which consists of the estimating of the amount of time needed to complete all individual schedule activities, typically and traditionally takes place before a project is kicked [...]

4. Original Duration (OD)

   Original duration is one of the most critical elements of effective and comprehensive project management, as it is a truly valid representation of the length of time that it was originally assumed it would take from the onset to the conclusion of the project. To be more specific, in terms of the life cycle of [...]

5. Activity List

   The activity list is essentially an itemized documentation of all of the schedule activities that are part of a particular project. These lists are typically (and ideally should be) very detailed and comprehensive, providing as many details as possible to make it as easy and quick as possible for a user to attain general, broad [...]