10/17/2023 0 Comments Two way anova spss codeIn Example 1 there are two factors: blends and crops. A k factor ANOVA addresses k factors.Ī level is some aspect of a factor these are what we called groups or treatments in the one-factor analysis discussed in Basic Concepts for ANOVA. ![]() We interrupt the analysis of this example to give some background, after which we will resume the analysis.ĭefinition 1: We define the structural model as follows.Ī factor is an independent variable. The crop yields for the 12 combinations are as shown in Figure 1. ![]() They test each of the three blends on one sample of each of the four types of crops. To help introduce the basic concepts we start with the following example.Įxample 1: A new fertilizer has been developed to increase the yield on crops, and the makers of the fertilizer want to better understand which of the three formulations (blends) of this fertilizer are most effective for wheat, corn, soybeans and rice (crops).
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