How is an individuals chart different from an x-bar and R control chart? An individuals chart is made from averages of subgroups of individual measurements, but an x-bar and R control chart is made from single measurements. X-bar and R control charts are made from averages of subgroups of individual measurements whereas individuals charts are made from single measurements. An individuals chart is used in statistical process control (SPC) applications, but an x-bar and R control chart is used in statistical quality control (SQC) applications. An individuals chart uses upper and lower control limits (UCLs and LCLs), but an x-bar and R chart does not