A StepbyStep Introduction to Statistics for Business
Second Edition
Chapter 10: Analysis of Variance (ANOVA)
Answers for all ‘Test Yourself’ questions from the book to check your performance and widen your overall understanding of the contents.
 Independentsamples ttest is used when comparing two independent group means. Oneway ANOVA can be used with any number of independent group means.
 H_{0}: μ_{1} = μ_{2} = μ_{3} = μ_{4} = μ_{5} = μ_{6} = μ_{7}
H_{1}: At least two means differ 
 Between the group means and the overall mean.
 Between each case and each case’s group’s mean.

 3
 18
 .05
 3.68
 Yes, the results were statistically significant
 For each of the following, find the missing value:
 df_{B} = 2
 SS_{T} =35
 df_{W} = 10
 MS_{B} = 14