Q 1.82. - Elementary Statistics

Question

State and explain the significance of the three basic principles of experimental design.

Step-by-Step Solution

Answer

Control, Randomization, and Replication are the three basic principles of experimental design.

Step 1. Given information.

The given statement is:

State and explain the significance of the three basic principles of experimental design.

Step 2. Significance of the basic principles of experimental design.

Experimental Design is based on three key principles:

1. Control: Comparison of two or more treatments:
2. Randomization. To avoid inadvertent selection bias when forming the groups, the experimental units should be divided into groups at random.
3. Replication: A sufficient number of experimental units should be utilised to ensure that randomization produces results that are closely similar to one another and to improve the possibilities of identifying differences between treatments.

The rules of experimental design allow a researcher to infer that variations in an experiment's outcomes that are not fairly due to chance are most likely caused by the treatments.