Basic Principles of Experimental Designs Experimental Designs
are basically based on the various types of designs of
Experiments and how an Experiment looks nice if it is designed
in a better way. Basic Principles of Experimental Designs
Professor Fisher has enumerated three principles of experimental
designs: - the Principle of Replication; - the Principle of
Randomization; - Principle of Local Control. According to the
Principle of Replication, the experiment should be repeated more
than once. Thus, each treatment is applied in many experimental
units instead of one. By doing so the statistical accuracy of
the experiment is increased. For example, suppose we are to
examine the effect of two varieties of rice. For this purpose we
may divide the field into two parts and grow one variety in one
part and the other variety in the other part. We can then
compare the yield of the two parts and draw conclusion on that
basis. But if we are to apply the principle of replication to
this experiment, then we first divid