Analysing sex ratio variables in Nepal

Maraseni, Tek Narayan and Cockfield, Geoff and Nooriafshar, Mehryar and Apan, Armando (2006) Analysing sex ratio variables in Nepal. In: 5th Annual Hawaii International Conference on Statistics, Mathematics and Related Fields, 16-18 Jan 2006, Honolulu, Hawaii, USA.

PDF (Accepted Version)

Download (343Kb)


In some reptiles (for example the turtle) and birds (for example Alectura lathami) incubation temperature plays pivotal role for sex determination. Mendal’s theory argues that there is an equal chance of having male and female offspring. However, whether this applies to humans and specifically all castes (ethnic groups) in a Nepalese population is researchable. This paper tested two hypotheses: (a) whether there is statistically significant relationship between temperature and sex ratio and (b) whether there is statistically significant relationship between caste type and sex ratio. Since Nepal is an ideal place to test these hypotheses we used the population data of Nepal (1991). To test the first hypothesis, we applied Chi-Square test and found that the temperature has no statistically significant role on human sex determination. For the second hypothesis, we applied Z-test. In 43 castes, we found that there was statistically significantly higher number of male than female population. In another 22 castes, the female population was found statistically significantly higher than the male population. This led us to conclude that, in some castes, probability of having a male or female infant is statistically higher. This does not support Mendal’s theory. Mendal’s theory is well tested and most of people may not agree with this conclusion. If so, this article raises a critical question of who is right, statistical theory or Mendal’s theory.

Statistics for USQ ePrint 6693
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Authors are believed to retain copyright.
Faculty / Department / School: Historic - Faculty of Business - Department of Economics and Resource Management
Date Deposited: 01 Feb 2010 05:56
Last Modified: 02 Jul 2013 23:37
Uncontrolled Keywords: caste, sex ratio, population, Nepal
Fields of Research : 01 Mathematical Sciences > 0104 Statistics > 010401 Applied Statistics
06 Biological Sciences > 0604 Genetics > 060403 Developmental Genetics (incl. Sex Determination)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970106 Expanding Knowledge in the Biological Sciences

Actions (login required)

View Item Archive Repository Staff Only