SixSigma (version 0.7-0)

ss.ca.yield: Main calculations regarding The Voice of the Process in SixSigma: Yield, FTY, RTY, DPMO

Description

Computes the Yield, First Time Yield, Rolled Throughput Yield and Defects per Million Opportunities of a process.

Usage

ss.ca.yield(defects = 0, rework = 0, opportunities = 1)

Arguments

defects

A vector with the number of defects in each product/batch, ...

rework

A vector with the number of items/parts reworked

opportunities

A numeric value with the size or length of the product/batch

Value

• Yield
  Number of good stuff / Total items
• FTY
  (Total - scrap - rework) / Total
• RTY
  prod(FTY)
• DPMO
  Defects per Million Opportunities

Details

The three arguments must have the same length.

References

Cano, Emilio L., Moguerza, Javier M. and Redchuk, Andres. 2012. Six Sigma with {R}. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York. http://www.springer.com/statistics/book/978-1-4614-3651-5.

Gygi C, DeCarlo N, Williams B (2005) Six sigma for dummies. --For dummies, Wiley Pub.

Examples

ss.ca.yield(c(3,5,12),c(1,2,4),1915)