APPENDIX 
TABLE Ia.—PRODUCTIVENESS OF TOTAL INVESTMENT 
Frequency distribution of the ratios of Gross Revenue to Total Assets of 200 public 
utility companies, 1915-1924 
Ratio Ratio Cumulative Percentage: Cumulative 
Groups Frequencies Frequencies Distribution Percentages 
BO-080 hrs rate, 56 56 3.8 3.8 
B-079. 0 shila 2 SA 208 264 14.1 17.9 
08-1190, JL ase eld 219 483 14.8 32.7 
12-1590 0g ae 289 772 1935 52.2 
16-199. meme tii: 239 1011 1652 68.4 
SE i Rp 203 1214 13.7 22.1 
as tal i Soar 104 1318 7.50 89.1 
2 - 58 1376 3.9 93.0 
a A 39 1415 2.6 95.16 
BO-B00 SA ha bt 27 1442 1.8 97.4 
A023 Cr Le re LE 17 1452 1.2 98.6 
LE PL el he 14 1473 1.0 99.6 
48519. nr es 6 1479 100.0 
Average: Approximated mode = ratio 14.1 
r 
1229