There has been a lot of discussion lately surrounding the levels and structure of executive compensation. It is well documented that in general, compensation received by senior executives has risen steeply in recent years. The accompanying table lists a portion of total compensation for the top 10 CEOs in four industry classifications: Manufacturing (technology); Manufacturing (other); Services (financial); Services (other). Total compensation for 2006 is measured in $ millions.

Data for Case Study 20.2 Top Executive Compensation (in $ millions), 2006

In a report, use the sample information to:
1. Calculate and interpret relevant summary measures for executive compensation in these four industries.
2. Explain why the one-way ANOVA F test for comparing three or more population means may be inappropriate in this case.
3. At the 5% significance level, use the Kruskal-Wallis test to determine whether some median compensations vary across classifications.

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Manufacturing Manufacturing Technology) 39.82 32.85 (Other) 64.63 60.73 Services Financial) 91.38 48.13 Services Other) 24.02 21.51 24.08 30.80 25.75 13.04