| Proportion of Outside | (1) | (2) | (3) | ||||||
| Group | Directors in Succession | Total Number of CEO | Number of Outside CEO | Percent of Outside CEO | |||||
| Number | Year | Appointments | Appointments | Appointments | |||||
| 1 | 0-40% | 35 | 2 | 5.7% | |||||
| 2 | 40-50% | 54 | 7 | 13.0% | |||||
| 3 | 50-60% | 109 | 16 | 14.7% | |||||
| 4 | 60-70% | 198 | 35 | 17.7% | |||||
| 5 | 70-80% | 253 | 49 | 19.4% | |||||
| 6 | 80-90% | 261 | 61 | 23.4% | |||||
| 7 | 90-100% | 59 | 17 | 28.8% | |||||
| Total | 969 | 187 | 19.3% | ||||||
| Tests of differences in the proportions in column (3): | |||||||||
| Chi - square statistic | P - value | ||||||||
| H0 (1 through 7)a | 10.96 | 0.092 | |||||||
| H0 (1:7)b | 5.80 | 0.018 | |||||||
| Tests of differences in the proportions in column (3) excluding financial | |||||||||
| (SIC 60-69), communication (SIC 48), and gas and electric firms (SIC 49): | |||||||||
| Chi - square statistic | P - value | ||||||||
| H0 (1 through 7)a | 18.88 | 0.004 | |||||||
| H0 (1:7)b | 7.50 | 0.007 | |||||||