Binomial Confidence Limits
for Proportions and Sex Ratios
Enter the number of Males (or Females):
Enter the TOTAL number of Males plus Females:

proportion lower 95% limit upper 95% limit

sex ratio lower 95% limit upper 95% limit

Enter Sex Ratio: Proportion =
Enter Proportion: Sex Ratio =

JavaScript © 1997 by John A. Byers, Chemical Ecology
Formulas from:
Byers, J.A. & Wood, D.L. (1980). Interspecific inhibition of the response of the bark beetles, Dendroctonus brevicomis and Ips paraconfusus, to their pheromones in the field. Journal of Chemical Ecology 6:149-164.

Spiegel, M.R. (1961). Theory and Problems of Statistics. Schaum's Outline Series, McGraw-Hill. New York, 359 pp.