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.
Because the scale of the line chart's horizontal (category) axis cannot be changed as much as the scale of the vertical (value) axis that is used in the xy (scatter) chart, consider using an xy (scatter) chart instead of a line chart if you have to change the scaling of that axis, or display it as a logarithmic scale.