f you are going to commit to quality, first you must define exactly what quality is. For manufacturers, this process involves statistical quality control, the process of setting a product's specifications and then sampling a small number of units from the production line to see how closely they measure up to those specs. Standards are set and, if too much deviation occurs (or if quality appears to be trending in the wrong direction), the manufacturing process is altered.
Tracking quality is admittedly more difficult in a service business, and efforts by groups such as the International Organization for Standardization (known as ISO) to create meaningful benchmarks beyond manufacturing have had mixed results.
One way to gauge customer satisfaction (and, by extension, the quality of your service) is by tracking what is called a net promoter score. Devised by a Bain consultant named Fred Reichheld, a net promoter score keeps tabs on the number of customers who would recommend a business to their friends. A customer who answers 9 or 10 is seen as a promoter; a customer who answers 7 or 8 is seen as passive; and a customer who gives a company a score of 6 or lower is seen as a detractor. By subtracting the number of detractors from the number of promoters, a company arrives at its net promoter score.