Homework SourseThe XYZ Corporation is interested in possible differences in
The XYZ Corporation is interested in possible differences in days worked by salaried employees in three departments in the financial area. A survey of 23 randomly chosen employees reveals the data shown below. Because of the casual sampling methodology in this survey, the sample sizes are unequal. Research question: Are the mean annual attendance rates the same for employees in these three departments?
| The XYZ Corporation is interested in possible differences in days worked by salaried employees in three departments in the financial area. A survey of 23 randomly chosen employees reveals the data shown below. Because of the casual sampling methodology in this survey, the sample sizes are unequal. Research question: Are the mean annual attendance rates the same for employees in these three departments? |
Solution
applying one way ANOVA on above data:
| Groups | mean | n | std dev | Variance |
| Budgets (5 workers) | 261.2 | 5 | 11.95 | 142.70 |
| Payables (10 workers) | 238.0 | 10 | 21.24 | 451.11 |
| Pricing (8 workers) | 244.4 | 8 | 9.46 | 89.41 |
