You will complete an x-bar and R chart similar to the example shown in Chapter 6, figure 6.8, from our textbook “Statistical Process Control and quality Improvement”, starting from the provided Excel template. Two versions of the assignment template are provided; 1A is for the newer version of Excel: .xlsx, 1B is compatible for older versions of Excel: .xls. You will enter the numerical data from the section below, and calculate all of the averages and ranges, then plot these numbers and add the connecting lines, in the appropriate chart sections. You will also calculate and plot the UCLX, LCLX, UCLR, and LCLR. The control limit formulas are on page 203 of the textbook. Be sure to include your upper and lower control limit calculations below the chart.
Numerical Data:
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| 908 | 900 | 905 | 892 | 896 | 930 | 890 | 918 | 912 | 908 | 907 | 913 | 940 | 941 |
| 926 | 911 | 889 | 901 | 908 | 882 | 903 | 917 | 884 | 926 | 896 | 912 | 912 | 882 |
| 910 | 905 | 902 | 895 | 925 | 900 | 890 | 914 | 919 | 910 | 945 | 915 | 936 | 934 |
| 885 | 862 | 873 | 955 | 933 | 871 | 900 | 925 | 898 | 885 | 926 | 928 | 913 | 917 |
| 903 | 898 | 915 | 892 | 895 | 913 | 930 | 917 | 889 | 903 | 912 | 909 | 896 | 894 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 895 | 895 | 942 | 916 | 896 | 922 | 917 | 904 | 891 | 885 | 918 |
| 890 | 892 | 885 | 897 | 908 | 895 | 893 | 909 | 916 | 960 | 917 |
| 909 | 896 | 911 | 912 | 894 | 928 | 910 | 923 | 920 | 900 | 914 |
| 915 | 902 | 916 | 920 | 906 | 950 | 925 | 888 | 915 | 879 | 925 |
| 951 | 912 | 892 | 904 | 920 | 920 | 906 | 907 | 890 | 897 | 917 |
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