Methods and formulas for confidence intervals and bounds in Poisson Capability Analysis

Mean Defective confidence interval

The 95% confidence interval for mean defective is calculated as follows:

Notation

TermDescription
v12 * Dtot
v22 * (Dtot + 1)
DtotSum of all the defectives
NNumber of samples

Mean DPU confidence interval

The 95% confidence interval for mean defects per unit is calculated as follows:

Notation

TermDescription
v12 * Dtot
v22 * (Dtot + 1)
DtotSum of all the defectives
NtotSum of all the sample sizes
By using this site you agree to the use of cookies for analytics and personalized content.  Read our policy