Question: Using the data table below, develop X bar R charts. Are they in control? Please solve in excel and show excel steps No . ct

Using the data table below, develop X bar R charts. Are they in control? Please solve in excel and show excel steps
No. ct1 ct2 ct3 ct4
127.3466727.5008529.9441228.21249
227.7969526.1500631.2129531.33272
333.5325529.3297129.704631.053
437.9840932.2694231.9174129.44279
533.8272230.3254328.3811733.70124
629.6835629.5667727.2307734.00417
732.626426.320332.0789236.17198
830.2957530.5286824.4331526.85241
928.4385630.4825132.4308330.76162
1028.277933.9491630.4740628.87447
1126.9188527.6613331.4693629.66928
1228.4654728.2993728.9944131.14511
1332.4267726.104129.4771837.20079
1428.8427330.5180132.2361430.47104
1530.7513632.9992228.0845226.19981
1631.2575424.2947335.4647728.41126
1731.2492128.5795435.0086531.23591
1831.4155435.8004933.6090927.82131
1932.202332.0200532.7101829.3762
2026.9160329.7777533.9269633.78366
2135.0532232.9328431.5164127.73615
2232.1248329.3285330.9970931.39641
2330.0917232.4393827.8472530.70726
2430.0483527.2370922.0180128.69624
2529.3027330.8373530.8273531.90733

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