**
Byers, J.A. 1993. Randomization algorithms in BASIC
for experimental design. Computers in Biology and
Medicine 23:167-176. pdf
**

**
Abstract--**
**
Six BASIC programs for randomization of treatments with respect to space and
time are presented. Program 1 is used to obtain randomization of several
treatments in an equal number of positions for any number of replicates such
that identical treatments are not replicated successively in the same position.
Program 2 randomly assigns different treatments as specified in a grid of any
size either (a) without constraints or (b) so that similar treatments do not
occur next to each other either horizontally or vertically, or
(c) horizontally, vertically, or diagonally. Program 3 assigns from five to
100 different treatments in equal proportions to a grid of specified size with
treatments separated as in Program 2 (c) above. Program 4 randomly assigns any
number of different treatments in equal proportions to a Latin square-like grid
containing row and column cells with a multiple number of the treatments such
that no identical treatments are replicated successively in the same row,
column, or both row and column. Program 5 produces Latin squares of letters
with unique numbered subscripts randomized. Program 6 makes Greco-Latin squares
with an odd number of letters per side. These programs will aid in
randomization of treatments within positions and replicates when a degree of
uniformity or spacing of treatments is desired in order to increase the power
of statistical tests.
**

Download software: RANDOM-2.ZIP
Chemical Ecology