American Journal of Theoretical and Applied Statistics

Volume 11, Issue 2, March 2022

  • Classical Approach to Zero-Inflated Dynamic Panel Ordered Probit Model with an Application in Drug Abuse

    John Kung’u, Leo Odongo, Ananda Kube

    Issue: Volume 11, Issue 2, March 2022
    Pages: 58-74
    Received: 20 January 2022
    Accepted: 4 March 2022
    Published: 12 March 2022
    Abstract: The Zero inflated ordered categorical data with time series structure are often a characteristic of behavioral research attributed to non-participation decision and zero consumption of substance such as drugs among the participants. The existing Semi-parametric zero inflated dynamic panel probit model with selectivity have exhibited biasness and in... Show More
  • Estimation of Finite Population Mean Using Ratio Estimator Based on Known Median of Auxiliary Variable in the Presence of Non-Response

    Charles Wanyingi Nderitu, Herbert Imboga, Anthony Wanjoya

    Issue: Volume 11, Issue 2, March 2022
    Pages: 75-82
    Received: 11 March 2022
    Accepted: 1 April 2022
    Published: 8 April 2022
    Abstract: The issue of non-response is a common phenomenon in sample surveys. Therefore, there is a need to develop ways of dealing with the challenge whenever it occurs. The current paper first introduces the stratification of the population as a result of the non-response. A theoretical review of the basic non response in sampling is as well explained and ... Show More