Analysis of Variance

Abstract

One of the many uses of statistics in agriculture and allied sciences is its use in testing the hypothesis of differences between two or more population means or variances. Generally, one tries to infer about the differences among two or more categorical or quantitative treatment groups. For example, by applying three vitamins to three distinct groups of animals or by applying five different doses of nitrogen to a particular variety of paddy or by applying three different health drinks to three groups of students of the same age, three, five, or three populations are defined, respectively. In the first case, each population is made up of those animals that will be subjected to those three types of vitamins. Similarly, the five populations of paddy are constituted of plants of plots subjected to five different doses of nitrogen. Three populations of students are administered with three different health drinks that constitute the three populations.