Question: Critically evaluate the reasons why estimates are often wrong (30%) and ways in which organisations can improve the quality of their estimates for project times and costs (70%).

This question is about the investigation on these issues and providing a way to improve the cost estimation against the actual cost which has occured and also about controlling the cost of the project. and also how does risk management or issues can affect the cost estimation and make the actual project cost more than estimation. please relate this investigation to either design and manufacturing, or for design and construction projects.