Environmental and Ecological Statistics

, Volume 20, Issue 2, pp 167–178 | Cite as

Statistical modeling to assess drinking water crisis



We modify the beta distribution by adding a parameter ρ ≥ 0 to capture the urgency level with which nations address drinking water crises. In essence, the urgency parameter relates to region’s environmental or development levels. The modified version is named an urgency biased beta distribution (UBBD). Its statistical properties are considered and illustrated by analysis of the drinking water data in the World Health Organization (2011) report. The methodology of this article is applicable to similar data sets arising in ecological, engineering, medical, business, marketing, and communication, etc. studies.


Healthcare Non-central chi-squared and F distributions Urgency level 


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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.School of Health AdministrationTexas State UniversitySan MarcosUSA
  2. 2.Statistics Department, School of BusinessTemple UniversityPhiladelphiaUSA

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