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When you have a line that goes steady 3then spikes: find the slope of the second line by doing TC=y
int+3v. Look at where the graph changes and use those numbers to find yintercept
P bar=total # of defects/total # of observations
Z=# of standard deviations
N=sample size (each day 100 jeans are sampled for 20 days) n=100
C bar=total # of defects/number of samples
When LCL is negative set equal to zero
X baruses mean, median, or mode
R
uses range (amt of dispersion)
Range=largestsmallest
Mean=sum/# summed
R bar= sum of ranges/number of ranges summed
When finding D4 or D3 the N is the number of observations per samples (not number of samples)
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 '08
 CLARK

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