Steele Industries has decided to use an R-Chart to monitor the changes in the variability of their 86.0086.00 pound metal shafts. The production manager randomly samples 77 metal shafts and measures the weight of the sample (in pounds) at 1818 successive time periods. Table Control Chart Copy Table Step 1 of 7 : What is the Center Line of the control chart? Round your answer to three decimal places. Period obs1 obs2 obs3 obs4 obs5 obs6 obs7 Sample Range 1 86.03 85.98 86.05 86.03 85.97 85.96 86.03 0.09 2 86.05 86.05 86.01 86.05 86.00 85.98 86.00 0.07 3 86.01 86.04 86.04 85.97 85.99 86.00 86.01 0.07 4 85.96 85.99 86.00 85.96 86.05 86.00 86.03 0.09 5 86.03 85.99 86.02 85.96 85.96 86.04 86.00 0.08 6 85.96 86.03 85.96 85.97 85.98 86.02 86.05 0.09 7 86.05 86.04 86.05 85.99 85.96 85.98 86.02 0.09 8 85.99 86.03 85.99 85.95 86.04 85.97 86.01 0.09 9 85.97 85.98 85.97 85.99 85.97 85.97 85.95 0.04 10 85.98 85.98 85.96 85.99 86.01 86.04 86.02 0.08 11 85.97 86.03 85.98 85.96 85.97 85.96 85.98 0.07 12 86.01 85.97 85.96 86.01 86.02 85.99 85.95 0.07 13 85.99 86.04 86.03 86.01 86.04 85.98 85.98 0.06 14 86.04 85.97 86.00 86.00 85.96 86.02 86.03 0.08 15 85.97 85.98 86.01 85.96 85.96 86.04 85.96 0.08 16 86.01 85.96 85.97 85.97 85.97 85.96 86.04 0.08 17 86.05 86.02 86.02 85.99 86.03 85.97 85.99 0.08 18 85.95 86.00 86.02 86.00 85.99 86.03 85.99 0.08
Steele Industries has decided to use an R-Chart to monitor the changes in the variability of their 86.0086.00 pound metal shafts. The production manager randomly samples 77 metal shafts and measures the weight of the sample (in pounds) at 1818 successive time periods.
Table
Control Chart
Copy Table
What is the Center Line of the control chart? Round your answer to three decimal places.
Period obs1 obs2 obs3 obs4 obs5 obs6 obs7 Sample
1 86.03 85.98 86.05 86.03 85.97 85.96 86.03 0.09
2 86.05 86.05 86.01 86.05 86.00 85.98 86.00 0.07
3 86.01 86.04 86.04 85.97 85.99 86.00 86.01 0.07
4 85.96 85.99 86.00 85.96 86.05 86.00 86.03 0.09
5 86.03 85.99 86.02 85.96 85.96 86.04 86.00 0.08
6 85.96 86.03 85.96 85.97 85.98 86.02 86.05 0.09
7 86.05 86.04 86.05 85.99 85.96 85.98 86.02 0.09
8 85.99 86.03 85.99 85.95 86.04 85.97 86.01 0.09
9 85.97 85.98 85.97 85.99 85.97 85.97 85.95 0.04
10 85.98 85.98 85.96 85.99 86.01 86.04 86.02 0.08
11 85.97 86.03 85.98 85.96 85.97 85.96 85.98 0.07
12 86.01 85.97 85.96 86.01 86.02 85.99 85.95 0.07
13 85.99 86.04 86.03 86.01 86.04 85.98 85.98 0.06
14 86.04 85.97 86.00 86.00 85.96 86.02 86.03 0.08
15 85.97 85.98 86.01 85.96 85.96 86.04 85.96 0.08
16 86.01 85.96 85.97 85.97 85.97 85.96 86.04 0.08
17 86.05 86.02 86.02 85.99 86.03 85.97 85.99 0.08
18 85.95 86.00 86.02 86.00 85.99 86.03 85.99 0.08
Sample Number051015Sample Range00.040.080.120.160.20The horizontal axis is labeled Sample Number and is divided into 19 equally sized classes, with tick marks given at the start and end of each class which are labeled as follows: the first tick mark is labeled 0, the sixth tick mark is labeled 5, the eleventh tick mark is labeled 10, the sixteenth tick mark is labeled 15.The vertical axis is labeled Sample Range and is divided into 5 equally sized classes, with tick marks given at the start and end of each class which are labeled as follows: the first tick mark is labeled 0, the second tick mark is labeled 0.04, the third tick mark is labeled 0.08, the fourth tick mark is labeled 0.12, the fifth tick mark is labeled 0.16, the sixth tick mark is labeled 0.20.Control ChartA control chart for 18 successive intervals.Observed Value 1A dot drawn at 1 on the horizontal axis and 0.09 on the vertical axis.Observed Value 2A dot drawn at 2 on the horizontal axis and 0.07 on the vertical axis.Observed Value 3A dot drawn at 3 on the horizontal axis and 0.07 on the vertical axis.Observed Value 4A dot drawn at 4 on the horizontal axis and 0.09 on the vertical axis.Observed Value 5A dot drawn at 5 on the horizontal axis and 0.08 on the vertical axis.Observed Value 6A dot drawn at 6 on the horizontal axis and 0.09 on the vertical axis.Observed Value 7A dot drawn at 7 on the horizontal axis and 0.09 on the vertical axis.Observed Value 8A dot drawn at 8 on the horizontal axis and 0.09 on the vertical axis.Observed Value 9A dot drawn at 9 on the horizontal axis and 0.04 on the vertical axis.Observed Value 10A dot drawn at 10 on the horizontal axis and 0.08 on the vertical axis.Observed Value 11A dot drawn at 11 on the horizontal axis and 0.07 on the vertical axis.Observed Value 12A dot drawn at 12 on the horizontal axis and 0.07 on the vertical axis.Observed Value 13A dot drawn at 13 on the horizontal axis and 0.06 on the vertical axis.Observed Value 14A dot drawn at 14 on the horizontal axis and 0.08 on the vertical axis.Observed Value 15A dot drawn at 15 on the horizontal axis and 0.08 on the vertical axis.Observed Value 16A dot drawn at 16 on the horizontal axis and 0.08 on the vertical axis.Observed Value 17A dot drawn at 17 on the horizontal axis and 0.08 on the vertical axis.Observed Value 18A dot drawn at 18 on the horizontal axis and 0.08 on the vertical axis.
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