Continue with the data set in Table 18.5.4, representing the lengths of broccoli trees after cutting. a.

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Continue with the data set in Table 18.5.4, representing the lengths of broccoli trees after cutting.
a. Find the center line for the R chart.
b. Find the control limits for the R chart.
c. Draw the R chart.
d. Comment on what you see in the R chart. In particular, is the variability of this process in control? How do you know?
Continue with the data set in Table 18.5.4, representing the
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