Some Minimum Cost Experimental Procedures in Quadratic Regression*
二次回归中的若干最低成本实验程序
Minimum cost procedures for multi-stage experiments determine the amount of replication at the various stages so that a desired estimate is obtained with a specified precision at minimum cost. This paper extends these procedures to experiments in which the characteristic ŷ being estimated is related to a controlled variable x by ŷ = α + βx + γx 2. Minimum cost procedures are obtained for estimating ŷ with at least a specified precision over the permitted experimental range…