1. A method for assessing business activities, the method comprising: retrieving historical data associated with a business activity; generating at least one statistical model based on the historical data; developing knowledge based on said generated at least one statistical model; applying the knowledge using at least one predetermined rule; assessing validity of the at least one statistical model based on said applying of the knowledge using the at least one predetermined rule; and recommending a valid statistical model for assessing the business activity based on said assessing validity of the at least one statistical model.