Answers:
Sales analysis examines sales reports to see what goods and services have and have not sold well. The analysis is used to determine how to stock inventory, how to measure the effectiveness of a sales force, how to set manufacturing capacity and to see how the company is performing against its goals.
Most organizations track their sales results; or, in non-profit organizations for example, the number of clients. The more sophisticated track them in terms of 'sales variance' - the deviation from the target figures — which allows a more immediate picture of deviations to become evident.
`Micro-analysis', which is simply the normal management process of investigating detailed problems, then investigates the individual elements (individual products, sales territories, customers and so on) which are failing to meet targets.