The largest 500 companies in the word were ranked according to their number of employees, with groups defined as follows:

• Small = under 25,000 employees
• Medium = 25,000 - 49,000 employees
• Large = 50,000 - 99,000 employees
• Huge = 100,000+ employees

Mean n Std. Dev 1.054 119 2.8475 Small 3.058 113 4.8265 Medium 3.855 147 5.8610 Large 3.843 120 4.3125 Huge 3.004 499 4.7925 Total ANOVA table Source SS if MS F p-value Profit to Assets Ratio by Company Size (Employees) Treatment 643.9030 3 214.63433 9.84 2.58E-06 50 Error 10,794.2720 495 21.80661 Total 11,438.1750 498 40 30 Post hoc analysis Tukey simultaneous comparison t-values (d.f. = 495) 20 Small Medium Huge Large 1.054 3.058 3.843 3.855 10 Small 1.054 Medium 3.058 3.27 0 Huge 3.843 4.62 1.28 Large 3.855 4.86 1.37 0.02 -10 critical values for experimentwise error rate: 0.05 2.60 -20 0.01 3.18 Small Medium Large Huge