The previous example illustrates a complete factorial experiment involving eight runs and three factors: cutting speed (SPEED), feed rate (FEED), and tool angle (ANGLE). Now, suppose two machines (A ...

Several important series of balanced incomplete block designs can be derived from orthogonal factorial designs. One is the series on balanced lattice of Yates (1936); refer to page 396 of Cochran and ...

An example is given with the analysis procedure. Block designs for the corresponding fractional factorial designs are also given. The mission of Technometrics is to contribute to the development and ...

We propose a general and unified approach to the selection of regular fractional factorial designs, which can be applied to experiments that are unblocked, blocked or have a split-plot structure. Our ...

In this article, we discuss the study design and lessons learned from a full-factorial randomised controlled study conducted with beneficiaries of a youth programme in Pretoria, South Africa. The ...