The r-chart
a. is used to indicate gains or losses in uniformity.
b. generally uses co...
Mathematics, 08.10.2019 05:00 jhitotw
The r-chart
a. is used to indicate gains or losses in uniformity.
b. generally uses control limits set at plus or minus 2 standard deviations of the distribution, rather than plus or minus 3 which is commonly used on the x-bar chart.
c. control limits are computed using sample standard deviations.
d. is used to measure changes in the central tendency.
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