Description Usage Arguments Value Author(s) References See Also Examples

The quality loss function is one of the tools of the Six Sigma methodology. The function assigns a cost to an observed value, that is larger as far as it is from the target.

1 | ```
ss.lf(lfa.Y1, lfa.Delta, lfa.Y0, lfa.L0)
``` |

`lfa.Y1` |
The observed value of the CTQ (critical to quality) characteristic that will be evaluated. |

`lfa.Delta` |
The tolerance for the CTQ. |

`lfa.Y0` |
The target for the CTQ. |

`lfa.L0` |
The cost of poor quality when the characteristic is |

`ss.lf` |
A number with the evaluated function at |

EL Cano

Taguchi G, Chowdhury S,Wu Y (2005) *Taguchi's quality engineering handbook*. John
Wiley

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.

1 2 | ```
#Example bolts: evaluate LF at 10.5 if Target=10, Tolerance=0.5, L_0=0.001
ss.lf(10.5, 0.5, 10, 0.001)
``` |

SixSigma documentation built on April 16, 2018, 1:03 a.m.

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