Calculate p-chart three-sigma control limits to asses whether the capping process is in statistical control. SHOW ALL WORK
we first calculate p-bar i.e the center line
p-bar =Average of the fraction defective values=AVERAGE(E3:E22)=0.025
Next, we calculate Sp =sqrt(p-bar(1-p-bar)/n))
=sqrt(0.025*(1-0.025)/144))
=0.013
UCLp =p-bar+z *Sp=0.025+3*0.013=0.064
LCLp=p-bar-z*Sp=0.025-3*0.013=-0.014
From the p-chart,it is evident that all the fraction defective values lie within the control limits and hence the process is in statistical control.
Calculations are as shown below:
Calculate p-chart three-sigma control limits to asses whether the capping process is in statistical control. SHOW...
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