Figure 37.2: An np Chart for Circuit Failures Each point on the np chart represents the number of nonconforming items for a particular subgroup. For instance, the value plotted for the first batch is ...

Youíll learn how to select the right attribute data control chart, and how to create those control charts. These include the NP Chart, the P Chart, the U Chart and the C Chart. To do this you must ...

This example shows how you can apply tests for special causes to make np charts more sensitive to special causes of variation. The following statements create a SAS data set named CIRCUIT3, which ...

Joel K. Jolayemi, A Statistical Model for the Design of Multiattribute Control Charts, Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), Vol. 61, No. 2 (Aug., 1999), pp. 351-365 ...