Table 2.

Factors corresponding to 80% and 95% CI limits of an estimated SD.1

n80% CI95% CI
LowerUpperLowerUpper
500.8811.1400.8351.243
600.8971.1380.8481.217
700.9041.1260.8571.198
800.9091.1160.8651.183
900.9141.1090.8721.171
1000.9181.1020.8781.161
1500.9321.0820.8981.128
2000.9411.0700.9111.109
2500.9471.0620.9191.096
3000.9511.0560.9261.087