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Stats, Volume 7, Issue 1

March 2024 - 20 articles

Cover Story: Social and behavioral scientists use structural equation models (SEMs) as mathematical representations of complex theories involving multivariate data. Sophisticated sampling designs can yield dependencies that complicate standard SEMs, requiring more advanced estimation methods. Round-robin designs have a social-network structure, in which every member of a group is potentially linked to every other member of the same group. This yields dyadic data, in which the same variable is measured for each member of a pair in response to (or about) the other member of the pair. Every person is a member of several pairs within the network. This paper demonstrates a method to account for this complexity in the first step to estimate SEM parameters. View this paper
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Articles (20)

  • Article
  • Open Access
1 Citations
1,896 Views
17 Pages

20 March 2024

Direct, indirect and synthetic estimators have a long history in official statistics. While model-based or model-assisted approaches have become very popular, direct and indirect estimators remain the predominant standard and are therefore important...

  • Article
  • Open Access
5 Citations
3,216 Views
16 Pages

13 March 2024

A new unimodal distribution family indexed via the mode and three other parameters is derived from a mixture of a Gumbel distribution for the maximum and a Gumbel distribution for the minimum. Properties of the proposed distribution are explored, inc...

  • Article
  • Open Access
3 Citations
2,114 Views
16 Pages

7 March 2024

In this article, we establish new distribution-free Shewhart-type control charts based on rank sum statistics with signaling multiple scans-type rules. More precisely, two Wilcoxon-type chart statistics are considered in order to formulate the decisi...

  • Article
  • Open Access
2,363 Views
17 Pages

6 March 2024

In radiotherapy treatment planning, the absorbed doses are subject to executional and preparational errors, which propagate to plan quality metrics. Accurately quantifying these uncertainties is imperative for improved treatment outcomes. One approac...

  • Article
  • Open Access
3 Citations
2,799 Views
15 Pages

5 March 2024

For decades, conventional wisdom maintained that binary 0–1 Bernoulli random variables cannot contain extra-binomial variation. Taking an unorthodox stance, Hilbe actively disagreed, especially for correlated observation instances, arguing that...

  • Article
  • Open Access
2 Citations
3,287 Views
34 Pages

28 February 2024

We propose and demonstrate a new two-stage maximum likelihood estimator for parameters of a social relations structural equation model (SR-SEM) using estimated summary statistics (Σ^) as data, as well as uncertainty about Σ^ to obtain rob...

  • Article
  • Open Access
4 Citations
2,461 Views
15 Pages

24 February 2024

By collecting and expanding several numerical recipes developed in previous work, we implement an object-oriented Python code, based on the networkX library, for the realization of the configuration model and Newman rewiring. The software can be appl...

  • Article
  • Open Access
2,137 Views
17 Pages

New Vessel Extraction Method by Using Skew Normal Distribution for MRA Images

  • Tohid Bahrami,
  • Hossein Jabbari Khamnei,
  • Mehrdad Lakestani and
  • B. M. Golam Kibria

23 February 2024

Vascular-related diseases pose significant public health challenges and are a leading cause of mortality and disability. Understanding the complex structure of the vascular system and its processes is crucial for addressing these issues. Recent advan...

  • Article
  • Open Access
1 Citations
2,411 Views
18 Pages

19 February 2024

Discrete choice models (DCMs) are applied in many fields and in the statistical modelling of consumer behavior. This paper focuses on a form of choice experiment, best–worst scaling in discrete choice experiments (DCEs), and the transition prob...

  • Article
  • Open Access
4 Citations
2,760 Views
13 Pages

9 February 2024

Reference intervals play an important role in medicine, for instance, for the interpretation of blood test results. They are defined as the central 95% values of a healthy population and are often stratified by sex and age. In recent years, so-called...

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Stats - ISSN 2571-905X