ATTRIVAR: a mixture of attribute and variable charts to monitor the process mean.
ATTRIVAR charts have a performance similar to the 160" class="mathmlsrc">160.gif&_user=111111111&_pii=S0925527316302420&_rdoc=1&_issn=09255273&md5=ee56610e0b6a86fd184d1f65d9029ef4">160.gif"> chart in terms of ARL.
ATTRIVAR charts have the benefits of an attribute control chart.
The operational cost of ATTRIVAR charts is much lower than the chart.