Presents a quality management case study describing the resolution of one type of audible noise during operation of a clothes dryer. The oise, if heard by the customer, frequently resulted in a call for a repair service. Although the noise really never affected the functional quality or...

Purpose – The paper aims to improve the key quality performance of the terminal of earphone in an electronic company. Design/methodology/approach – Sequential experimental designs are employed. Significant input variables are found trough a full factorial design. Then a response surface...

The evaluation of training programmes is discussed: objectives must be defined and a proper experimental design must be used. The article describes a field study in “Self‐esteem Training” which was also used to examine the application of the Solomon four group design. It was shown that...