Quality Quandaries∗: Box-Cox Transformations and Time Series Modeling—Part I

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ACKNOWLEDGMENTS

Soren Bisgaard was supported by the Isenberg Program for Technology Management, the Isenberg School of Management, University of Massachusetts Amherst.

Notes

Adapted from Box et al. (1994).

Differencing: 1 regular, 1 seasonal of order 12. Number of observations: Original series 77, after differencing 64. Residuals: SS = 1.40755; MS = 0.02270; df = 62.

Differencing: 1 regular, 1 seasonal of order 12. Number of observations: Original series 77, after differencing 64. Residuals: SS = 74782.6; MS = 1206.2; df = 62.

Differencing: 1 regular, 1 seasonal of order 12. Number of observations: Original series 72, after differencing 59. Residuals: SS = 64310.4; MS = 1128.3; df = 57.

∗Edited by S⊘ren Bisgaard