Construct an X chart-R chart for the following data set. (Leave no cells blank - be certain to enter "0" wherever required. Do not round intermediate calculations. Round your answers to 2 decimal places.) Sub group No R 2.1 2.1 2.8 1.3 2.1 2.0 6:00 14.6 13.2 12.3 13.4 13.5 14.4 14.4 14.0 12.1 13.7 12.3 13.6 14.3 13.0 14.3 13.1 14.7 14.4 12.9 12.2 12.4 13.9 14.9 13.6 13.6 10:00 12.5 12.9 12.1 13.8 13.9 12.4 13.7 15.0 13.0 13.1 13.7 13.7 13.1 13.6 14.4 14.1 13.7 14.4 14.4 14:00 12.7 14.9 13.0 12.6 12.6 14.1 13.9 13.7 12.9 14.9 13.1 12.9 14.6 14.1 12.1 14.6 12.6 14.1 12.1 13.4 14.2 13.1 12.2 12.1 14.8 18:00 22:00 13.7 14.1 12.9 15.0 14.9 13.6 13.9 13.6 14.5 12.4 13.1 12.5 12.4 12.1 13.0 14.1 14.0 14.2 14.7 14.7 12.5 12.9 13.0 13.7 14.4 12.7 13.1 12.3 14.1 12.2 12.6 12.6 12.9 12.3 13.2 14.5 12.7 14.5 12.6 13.2 14.5 12.5 14.8 13.7 12.7 12.6 13.4 14.2 13.1 Sum Grand Mean x bar 13.5 13.8 13.2 13.5 13.6 13.3 13.3 14.0 13.2 14.2 12.9 13.4 13.8 13.2 13.4 13.4 13.2 14.1 13.3 13.4 13.4 13.5 13.2 12.9 13.6 336.46 13.46 2.3 2.0 2.1 1.8 1.4 .8 1.9 1.8 2.3 WPWO 12.9 13.4 12.6 12.8 12.3 2.7 1.5 2.5 50.40 2.02 picture Click here for the Excel Data File X Chart R Chart Data Points Central line Lower control limit (LCL) Upper control limit (UCL)