ISBN-13: 9780750655132 / Angielski / Miękka / 2001 / 160 str.
ISBN-13: 9780750655132 / Angielski / Miękka / 2001 / 160 str.
The ISO 9000 quality management standard requires that registered companies measure customer statisfaction. Many customer surveys produce misleading results due to poor questionnaire design, inappropriate data collection methods and invalid statistic analysis.