Remark on the Paper by Rao And Kakehashi (2005)

  • Received: 01 January 2006 Accepted: 29 June 2018 Published: 01 February 2006
  • MSC : 92A15, 62A10.

  • The paper by Rao and Kakehashi [1] uses the Weibull distribution (given by equation (3) in the paper) and a truncated version of it (given by equations (4) and (5)) to model HIV/AIDS data in India. After a careful reading, I have found that all of the results presented in the appendix are incorrect (starting with equation (11) itself). Instead of pointing out all of the specific errors, I have chosen to give the correct formulas (and a brief outline of their derivation) for the $r$th moment of the truncated Weibull distribution.

    Citation: Saralees Nadarajah. Remark on the Paper by Rao And Kakehashi (2005)[J]. Mathematical Biosciences and Engineering, 2006, 3(2): 385-387. doi: 10.3934/mbe.2006.3.385

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  • The paper by Rao and Kakehashi [1] uses the Weibull distribution (given by equation (3) in the paper) and a truncated version of it (given by equations (4) and (5)) to model HIV/AIDS data in India. After a careful reading, I have found that all of the results presented in the appendix are incorrect (starting with equation (11) itself). Instead of pointing out all of the specific errors, I have chosen to give the correct formulas (and a brief outline of their derivation) for the $r$th moment of the truncated Weibull distribution.


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