ABSTRACT
Experiments are conducted in many areas of research involving high costs, time, materials, and labor, and hence the results obtained from these experiments must be as accurate as possible. The aim of the researcher is to detect even small differences that exist among treatments, and also to mea sure the precision of the estimates for the purpose of reliability. Reliable re sults save expenditures. Hence, it is imperative to know the basic principles of experimental design, which are common to all areas of research. Follow ing are three basic principles of experimental design:
1. Replication 2. Randomization 3. Local control
They are discussed in detail in this chapter.
