Predicting the time it will take to do a task. Observations are built during a period of time for you fully grasp this information. AKA work sampling.
Statistical technique used for forecasting the total time consumed by an action, in processes which range from customer care and manufacturing to telemarketing. It depends on the observations made-over a period to capture what exactly is occurring at that instant, while the regularity of which a number of activities are being done. Also referred to as work sampling.