Factorial 2p–qPlans Robust Against Linear and Quadratic Trends
- 1 May 1966
- journal article
- research article
- Published by Taylor & Francis Ltd in Technometrics
- Vol. 8 (2), 259-278
- https://doi.org/10.1080/00401706.1966.10490346
Abstract
When the substrate of a 2 n–q factorial or fractional factorial experiment may be expected to show trends representable by linear and quadratic terms in time, then certain orderings spaced at equal time-intervals permit better estimation of the effects than do others. Some of these ordered plans are given for p – q = 2, 3, 4, 5. Simple methods are given for computing effects, trends, and efficiencies.Keywords
This publication has 4 references indexed in Scilit:
- Experimental Designs to Adjust for Time TrendsTechnometrics, 1960
- Some Recent Work on Systematic Experimental DesignsJournal of the Royal Statistical Society Series B: Statistical Methodology, 1952
- MULTI-FACTOR DESIGNS OF FIRST ORDERBiometrika, 1952
- SOME SYSTEMATIC EXPERIMENTAL DESIGNSBiometrika, 1951