Wybrane aspekty szacowania czasów trwania czynności w projektach

The article describes theoretical aspects of project time management, according to actual project management standards, developed by Project Management Institute. Activity duration estimating techniques were presented, including their advantages and disadvantages, conditions of use, known limitations and costs of implementation. Analyzed estimating techniques were classified as soft, hard and supporting by increasing demand of information. Access to the information was the main criterion of technique selection because of minimizing the estimating error possibility.