Here p bar = total no.of defs in all samples/ total no.if items in all samples CL = p bar LCL = pbar - √[Pbar(1-pbar)/ni] UCL = pbar + √[Pbar(1-pbar)/ni] where ni is the sample size of ith sample ivide LCL, UCL oru single straight line aavilla...oro intervalum oro value varum
