ANOVA (Two-Way)

 

TWO-WAY CLASSIFICATION OF ANOVA

1. The following table gives the wheat yield in bushels per acre of 4 varieties grown in 5 blocks. Test the mean yield of these varieties or block differ significantly. F(3,16). 5% = 3.04

2. Data about the number of units produced per day turned out by 4 different workers using 5 different types of machines are: 

On the basis of the information, can it be conclude that:

a). the mean productivity is the same for different types of machines?

b). the workers do not differ as far as their productivity concerned?

3. The performance of a class of 200 students in the subjects of statistics and finance was graded into four classes A, B, C and D. The below table indicates number of students by grades in each of two subjects. Test at significance levels of 5% whether the performance can be inferred as independent.