This paper considers the problem of a continuous production process where both the mean and variance are simultaneously monitored by an (X) over bar chart and R chart respectively, and generalizes the model of Costa (IIE ...

This paper considers the problem of a continuous production process where both the mean and variance are simultaneously monitored by an (X) over bar chart and R chart respectively, and generalizes the model of Costa (IIE ...

A model for the joint economic design of X̄ and R control charts is developed. This model assumes that the process is subject to two assignable causes. One assignable cause shifts the process mean; the other shifts the ...

This text privides undergradate students with a practical introduction to economic research methodology. This book makes studentes aware of what experienced researchers know implicitly: research is fundamentally a process ...

This text privides undergradate students with a practical introduction to economic research methodology. This book makes studentes aware of what experienced researchers know implicitly: research is fundamentally a process ...

On-line monitoring of process variability is strategic to achieve high standards of quality and maintain at acceptable levels the number of nonconforming items. Shewhart control charts are the simplest Statistical Process ...