STATISTICS Lecture Notes - Statistical Unit, Statistical Model, Analysis Of Variance
Document Summary
Completely randomized design description layout analysis advantages. In this design the treatments are assigned completely at random so that each experimental unit has the same chance of receiving any one treatment. But crd is appropriate only when the experimental material is homogeneous. As there is generally large variation among experimental plots due to many factors crd is not preferred in field experiments. In laboratory experiments and greenhouse studies it is easy to achieve homogeneity of experimental materials and therefore crd is most useful in such experiments. Completely randomized design is the one in which all the experimental units are taken in a single group which are homogeneous as far as possible. The randomization procedure for allotting the treatments to various units will be as follows. Step 1: determine the total number of experimental units. Step 2: assign a plot number to each of the experimental units starting from left to right for all rows.
