Principles of design of experiments-II: Randomization
This blog deals with the basic concept of randomization and its functions along with a suitable example. ( reading time 7 min. ) There are three principles of designs of experiments: 1) Replication 2) Randomization 3) Local Control In a previous blog , we have seen how replication provides an estimate of an experimental error. For a sound experiment, we need to estimate experimental error and that estimate must be an unbiased estimate. Randomization helps us to get an unbiased estimate of experiment error. Definition When all the treatments have equal chances (probability) of being allocated to all the experimental units it is called randomization. Experimental units can be seeds, plants, animals etc. depending on your research. The procedure of randomization varies with the experimental design used. Randomization also allows us to use probability theory and different statistical techniques. The complex statistical techniques can be used only if randomization i...