1. REPLICATED COMPOSITE COMPLETE-INCOMPLETE BLOCK DESIGNS FOR SENSORY EXPERIMENTS
- Author
-
John A. Cornell and F. W. Knapp
- Subjects
Treatment interaction ,Block (programming) ,Generalized randomized block design ,Incomplete block ,Statistics ,Replication (statistics) ,Composite number ,Algorithm ,Food Science ,Mathematics ,Block design - Abstract
Composite complete-incomplete (C-I) block designs are formed by combining complete blocks of size t units with balanced incomplete blocks of k units (1 ≤ k < t) resulting in blocks of size t+k units. In sensory experiments, composite C-I block designs have been shown to be more efficient than the standard complete block designs. Replication of the blocks in these C-I block designs permits accurate interpretation of panelist X treatment interaction effects. Also, the formulae for calculating estimates of the treatments, panelists, and interaction effects are simpler in form with the replicated C-I designs than the corresponding formulae with the unreplicated C-I block designs. The analysis of an experiment involving the rating of flavor of three strawberry preserves using a replicated C-I block design is presented.
- Published
- 1974