The Efficiency of Bartlett's Test using Different forms of Residuals for Testing Homogeneity of Variance in Single and Factorial Experiments-A Simulation Study

Odoi, Benjamin; Twumasi-Ankrah, S.; Samita, S.; Al-Hassan, S.

doi:10.1016/j.sciaf.2022.e01323

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…For our study, the KMO was 0,860, well above what is required. Bartlett's test evaluates the null hypothesis that the correlation matrix of the variables is an identity matrix, which would indicate no relationship between the variables (Odoi et al, 2022). For our study, Barlett's test was significant (0,000).…”

Section: Reliability Resultsmentioning

confidence: 59%

Psychometric Properties of the Social Media Addiction Scale (SMAS) on Chilean University Students

Martínez Líbano,

González Campusano,

Pereira Castillo

et al. 2023

Data and Metadata

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Background: The use and abuse of social networks are harming the mental health of university students. Objective: To adapt and validate the Social Media Addiction Scale (SMAS) for the Chilean context to have a reliable instrument to measure addiction to social networks. The sample comprised 686 university students (mean age = 28.04, SD = 8.4), 71.1% female, 28.4% male, and 0.5% other genders. Methods: Confirmatory factor analysis (CFA) using the weighted least squares means and variances method (WLSMV) was used for this study. Results: Reliability was Cronbach's alpha (α) 0.841. The SMAS yielded two factors that explained 53.433% of the variance. The CFA yielded very good fit indicators such as CFI = .959, TLI = .949, and RMSEA .060.Conclusions: Based on the results described above, we can affirm that the SMAS is a good instrument to measure social network addiction in college students.

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Section: Reliability Resultsmentioning

confidence: 59%

Psychometric Properties of the Social Media Addiction Scale (SMAS) on Chilean University Students

Martínez Líbano,

González Campusano,

Pereira Castillo

et al. 2023

Data and Metadata

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“…Bartlett test is used to test the hypothesis that the parameter s is equal under different stress levels [17]. The intermediate results are listed, Table 8.…”

Section: Distribution Parameter Estimationmentioning

confidence: 99%

“…Bartlett test is used to test the hypothesis that the parameter

{{\sigma }}

is equal under different stress levels [17]. The intermediate results are listed, Table 8.

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr B^2 = 2\left( {\sum\limits_{i = 1}^k {l_{r_i n_i } } ^{ - 1} } \right) \hfill\cr \left[ {{\bf{ln}}\left( {\sum\limits_{i = 1}^k {l_{r_i n_i } } ^{ - 1} \hat \sigma _i } \right) - {\bf{ln}}\left( {\sum\limits_{i = 1}^k {l_{r_i n_i } } ^{ - 1} } \right)} \right] \hfill\cr - 2\sum\limits_{i = 1}^k {l_{r_i n_i } } ^{ - 1} \widehat {{\bf{ln}}\sigma }_i \hfill\cr}}

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr C = 1 + {1 \over {6\left( {k - 1} \right)}}\left[ {\mathop \sum \limits_{i = 1}^k l_{r_i n_i } - \left( {\mathop \sum \limits_{i = 1}^k l_{r_i n_i } ^{ - 1} } \right)^{ - 1} } \right]\hfill\cr}}

…”

Section: Statistical Analysis Of Gear Accelerated Life Test Datamentioning

confidence: 99%

Research on gear life reliability analysis based on accelerated life test

He,

Yang,

Zhou

et al. 2024

Materialwissenschaft Werkst

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As one of the key components of marine reducer, the life reliability of gear is of great significance to the safe operation of the reducer and even the whole transmission system. However, due to economic and testing constraints, executing extensive fatigue life tests on complex and costly gears presents a formidable challenge, resulting in inadequate reliability assessments. In this paper, the gear life reliability analysis method based on the accelerated life test is proposed. By conducting the gear bending fatigue accelerated life test, the life distribution and failure mechanism are determined based on the accelerated life data. Furthermore, the gear life distribution parameters and acceleration model are solved by least squared method. This allows us to derive a reliability index specific to the service conditions, facilitating the evaluation of gear life reliability. The method proposed in this paper provides data and theoretical support for the accelerated life tests, lays a foundation for the gear reliability evaluation under small samples, and improves the efficiency of the gear fatigue life evaluation. It has significant engineering significance in saving test costs, reducing test times and shortening development cycle.

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“…This suggests that the data collected for this research showed good partial correlation. The outcome of the Bartlett's test for sphericity is 0.0001, which is considered highly significant (21) . The scale's factors were ultimately determined by the analysis's factor solution to be 7, which accounted for 70.83 percent of the variation in the data.…”

Section: Exploratory Factor Analysismentioning

confidence: 99%

HR Managers’ Competencies in Implementing Strategic HRM: A Causal Attribution Theory Perspective

Chourasia¹,

Bahuguna²

2023

IJST

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Objective: Although research on Strategic Human Resource Management (SHRM) has surged in the last 10 years, however, the effect of HR managers' HR Competencies on SHRM implementation it's still less explored. Methods: This study, intends to investigate how HR managers' HR abilities contribute to the implementation of SHRM in organizations in oil & gas sector in India. The survey collects the opinions of 157 executives with more than ten years of experience on the use of SHRM and the global HR skills of HR managers in the Indian oil and gas sector. Analysis for data was conducted through Structural equation modelling. Findings : Findings reveal that Strategic positioner and innovator and integrator competencies are significantly related to SHRM implementation. Conversely, capability builder, change agent, credible activist, and Technology proponent competencies do not find support in implementing SHRM in this study. This study is anchored on the Causal Attribution theory. This study makes a significant contribution by empirically examining the link between the competencies of HR managers and SHRM. It also has practical implications for HRM practitioners and senior management on how to appropriately choose, prepare, and equip HR managers to enable effective implementation of SHRM. Novelty: This study is the first empirical study to identify the effect of HR managers' HR competencies on implementation of Strategic HRM in public sector context.

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The Efficiency of Bartlett's Test using Different forms of Residuals for Testing Homogeneity of Variance in Single and Factorial Experiments-A Simulation Study

Cited by 5 publications

References 16 publications

Psychometric Properties of the Social Media Addiction Scale (SMAS) on Chilean University Students

Psychometric Properties of the Social Media Addiction Scale (SMAS) on Chilean University Students

Research on gear life reliability analysis based on accelerated life test

HR Managers’ Competencies in Implementing Strategic HRM: A Causal Attribution Theory Perspective

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