Tuesday, July 30, 2013

What is replication?



The repetition of experiment or the treatment under investigation is known as Replication.

What do you understand by experimental errors?



The actual difference between observed and expected value of variable due to some external variation is known as experimental errors. The external variation like treatment applied and their interaction, lack of uniformity in the methodology, carelessness in the experiment etc. The errors are caused mainly due to uncontrolled factors which are random.

What do you mean by Blocks?


The whole experimental units can be divided into homogenous sub-groups or strata, such a strata which are uniform among themselves are known as blocks.

What do you mean by Experimental Units?



The smallest division of experimental materials on which treatments are applied and observations are taken is known as experimental units. E.g. batch of seed, plot of land etc.

What do you mean by treatment?



The various topics or subjects of comparison in a comparative experiment are known as Treatments.

What do you mean by Experiment?



An experiment is a way or a tool of getting solution to a problem that is under consideration. Each experiment can be classified into two groups:-
1.   Absolute Experiment: The experiment used to determine single and finite value directly by various methods is known as absolute experiment.
2.   Comparative experiment: The experiment that is designed to examine or study the effects of two or more than two objects or situation according to the characteristics under consideration is known as comparative experiment.