For vignettes selection, two statistical methods are mentioned in the literature [ 40]. "Random designs" randomly select the desired number of vignettes from all possible vignettes.
Maybe it is our analytical human brains, through the eye, searching for order, meaning and pattern in a random design.
By having this crazy random design, it was almost sure to work, no matter how you built it".
We consider the nonparametric regression model with random design.
The experiment was conducted in a completely random design with three replications.
Three trials [12 14] of five trials were crossover or cluster random designs.
In case of incomplete knowledge random selection is preferable and an optimal random design exists.
One tray was used for each replication and each treatment was replicated three times, following a completely random design.
The experiment consisted of three replicates in a completely random design, each replicate consisting of 100 seedlings.
We consider the model of regression with random design, where the design density is unknown.
