Hand and Foot Modifier FA -F9 and T1 - T9. E1 - E4, FA - F9, TA - T9 Level II Modifier. E1-E4 Anatomic modifiers which are associated with the eyelid. FA, F1- F9 Anatomic modifiers which are associated with the fingers. TA, T1- T9 Anatomic modifiers which are associated with the toes.
X-bar and R Control Chart Issues and Resolution. X-bar and R control charts are used in quality control to identify when special cause or out-of-control conditions occur in time-series data so that timely corrective actions can be taken to resolve problems.
Table of Contents. Bar charts. Bar charts are one of the most commonly used types of graph and are used to display and compare the number, frequency or other measure (e.g. mean) for different discrete categories or groups. The graph is constructed such that the heights or lengths of the different bars are proportional to the size of the category they represent.