G Construct Mean and Range chart from the following data. Assume constant values A2 = 1.02, D3 = 0, D4 = 2.57 is the process under control? SUB-GROUP II N V M VH VH X XI XII 7 Sample 1 7 45 45 03.2.5 Marks 25 6.5 6.5 65 6 75 45 45 Sample2 7 65 6 35 05 65 4.5 45 55 55 35 4 Sample) 5.5 6 4 15 65 4.5 65 5 65 4 25 Sample 4 6.5 45 45 55 35 5 7.5 55 55 55 45 GCC 1 INI IM