bartlett’s test
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2022 ◽  
Author(s):  
Jadwiga Bąk ◽  
Danuta Zarzycka ◽  
Anna Mazur

Aim: This article presents the cultural adaptation and evaluation of the psychometric properties of the Polish versions of the Pain Coping Questionnaire for both children and parents. Materials & methods: The study involved children aged 12–17 years (n = 220), who experienced trauma-related pain, and their parents (n = 220). Results: In the questionnaire for children and parents, the Kaisera-Mayera-Olkina (KMO) measure of sample adequacy was 0.457 and 0.455, whereas Bartlett’s test of sphericity: Chi-square = 1523.93, p < 0.001 and Chi-square = 1325.31, p < 0.001, returned a statistically significant result. Cronbach’s alpha for the factors identified in both groups was between 0.833 and 0.904. Conclusion: The linguistic adaptation has shown that the Polish version of the Pain Coping Questionnaire meets the psychometric criteria for reliability and accuracy of the tool.


Electronics ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 158
Author(s):  
Zoe Kanetaki ◽  
Constantinos Stergiou ◽  
Georgios Bekas ◽  
Christos Troussas ◽  
Cleo Sgouropoulou

E-learning has traditionally emphasised educational resources, web access, student participation, and social interaction. Novel virtual spaces, e-lectures, and digital laboratories have been developed with synchronous or asynchronous practices throughout the migration from face-to-face teaching modes to remote teaching during the pandemic restrictions. This research paper presents a case study concerning the evaluation of the online task assignment of students, using MS Teams as an electronic platform. MS Teams was evaluated to determine whether this communication platform for online lecture delivery and tasks’ assessments could be used to avoid potential problems caused during the teaching process. Students’ data were collected, and after filtering out significant information from the online questionnaires, a statistical analysis, containing a correlation and a reliability analysis, was conducted. The substantial impact of 37 variables was revealed. Cronbach’s alpha coefficient calculation revealed that 89% of the survey questions represented internally consistent and reliable variables, and for the sampling adequacy measure, Bartlett’s test was calculated at 0.816. On the basis of students’ diligence, interaction abilities, and knowledge embedding, two groups of learners were differentiated. The findings of this study shed light on the special features of fully online teaching specifically in terms of improving assessment through digital tools and merit further investigation in virtual and blended teaching spaces, with the goal of extracting outputs that will benefit the educational community.


Author(s):  
Mohd Yunus Shukor

When it comes to finding the best fit of nonlinear curves to acceptable models, linear regression with least squares is the most effective technique. Because residuals (the difference between observed and predicted data) must follow a normal distribution and the data must be free of outliers and uniform variance, statistical tests are used to identify the most appropriate model for a given situation (homoscedasticity). If all of these characteristics are satisfied, the system is said to be robust. In parametric nonlinear regression, one of the numerous assumptions is that the within-group variances of the groups are all the same, which is one of several assumptions (exhibit homoscedasticity). If the variances vary from one another (show heteroscedasticity), then the model is not statistically competent to describe the data as a whole. Data on the detection of Vibrio cholerae DNA with polystyrene-coacrylic acid composite nanospheres as modelled using the nonlinear four-parameter logistic (4PL) regression was preliminary check for homogeneity of variance using the Bartlett’s and Levene’s tests. It was found that the critical value of 2 was 28.869, according to Bartlett's test findings. Excel's CHIDIST function yielded a probability of 0.389 (not significant), suggesting that the variances of the residuals did not change significantly. The p-value for Levenes's test was 0.917, indicating that there were no distinct changes between the residual variances meaning that the use of the 4-PL model in fitting the data was adequate statistically.


2021 ◽  
Vol 13 (4) ◽  
pp. 60-77
Author(s):  
Maria Hudakova ◽  
Maria Gabrysova ◽  
Zora Petrakova ◽  
Katarina Buganova ◽  
Vladimir Krajcik

The aim of the paper is to assess the impact of the length of entrepreneurship on the perception of the most important business risks in Slovakia and the Visegrad Group of Countries (V4 countries). The empirical research was conducted in 2019-2020. It was focused on assessing the state of enterprise risk management (ERM) application. The research file contained 422 online questionnaires completed by owners and managers of enterprises (OMEs). The results of this case study were compared with the results of similar studies performed in the V4 countries in 2017-2018. In total, 1,781 OMEs participated in the surveys mentioned. The following statistical methods were used to assess the data: ANOVA, Bartlett’s test, Agostini test, good fit test, and Grubbs test. The overall results of the empirical research highlight the significance and importance of the assessment of business risks in the V4 countries. The results in Slovakia in 2019-2020 and the research results in the V4 countries in 2017-2018 show that OMEs still consider market and economic risks to be most important in their business. Market and economic risks are related to sources that exert the most negative influence on enterprise success. The results are valuable for entrepreneurs, enterprise managers and institutions that provide comprehensive entrepreneurship support in the V4 countries. The overall results are significant at the regional, national, and international levels of the V4 countries and have the ability to strengthen the competitiveness of entrepreneurs within the EU common market.


2021 ◽  
Vol 1 (12) ◽  
Author(s):  
Boy Piter Nizu Kekry ◽  
Saraswati Shinta Komang ◽  
Helius Yare ◽  
Daniel Duwiri

Background: Our research reveals factor measures, which are generated to encourage economics students to engage in scientific publication and research processes. Research purposes: Availability of motivational models for scientific publications, as a form of developing economics students in the future. Research methods: Estimation using Exploratory Factor Analysis (EFA) approach, with statistical tools Jeffreys's Amazing Statistics Program (JASP) version 0.16.0.0. Research results: This study shows the accuracy of the model, including the calculated value of McDonald's and Cronbach's > 0.700, for the MSA value of 0.762, and the value of Bartlett's test < .001. For the correlation relationship, it is strengthened by the RMSEA number which is between 0.05-0.08. This study forms a 3 factor model for scientific publications of economics students. Conclusion: This study estimates the factors that can encourage the scientific publication model of economics students. Several factors in this research model are in line with the findings of previous researchers. This study shows that the accuracy of the model includes the McDonald's and Cronbach's > 0.700, for the MSA value of 0.762, and the Bartlett's test value < .001. For the correlation relationship, it is strengthened by the RMSEA number which is between 0.05-0.08. Thus, there are 3 factors in this model, namely the role of lecturers and families, students' basic abilities, and academic achievement goals. We realize that there are several theoretical challenges and measurement models, therefore further research is carried out using statistical test instruments and tools such as AMOS, PLS, and LISREL.


2021 ◽  
pp. 037957212110528
Author(s):  
Omar A. Alhaj ◽  
Hiba F. Al-Sayyed ◽  
Ola M. Charouf ◽  
Haitham Jahrami ◽  
Keith Morris

Purpose: This study aimed to translate and test the content validity and reliability of an English questionnaire used in the American food and health survey. Methods: The questionnaire was developed using 6 stages, then examined for test–retest. A total of 672 participants were recruited for validation and reliability. Validity test was performed using a correlation coefficient to measures the linear correlation between 2 questions at one given time. Moreover, the Kaiser-Meyer-Olkin, Measure of Sampling Adequacy, and Bartlett’s Test of Sphericity were performed to statistically determine the suitability for conducting exploratory factor analysis. Furthermore, reliability tests using Cronbach α was used to estimate the reliability coefficient properties of the translated scale. Finally, the most important correlated questions was plotted using a color-coded correlogram. Results: The test–retest reliability of all tested items was significantly correlated. The reliability test for all questions was 0.9. The cross-correlation test showed that all questions of the translated questionnaire were correlated significantly ( P < .05) indicating reliability of the questionnaire. Conclusion: The tested questionnaire is applicable and may be used in population-based studies to raise awareness regarding health, food consumption, nutrition, and food safety among people in Jordan and/or other Arab countries.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sri Muljaningsih

Abstract The establishment of a waste bank could be a social engineering tool for changing the mindset of students. This waste bank can be managed and made useful via the so-called “3R” concept (reduce, reuse, and recycle), which is the main principle used by waste banks. This study aimed to determine students’ interest in managing waste. The sample comprised three classes of students who are enrolled in natural resource economics courses from the Economics and Business Faculty of the University of Brawijaya. Each class has 31 students. Quantitative multivariate research was performed using a Likert scale. Validity and reliability tests were performed for behavioral control and to manage waste variables. Data analysis was used Multivariate analysis, and Bartlett’s test of sphericity was used for significance of the data. Results show that the behavioral control variable was positively correlated with and was influenced by the intention to manage waste or the interest in managing waste. We suggested that waste bank systems—in which waste can be exchanged for food or other products—could be applied in campus environments and that a waste bank should be established in the Faculty of Economics and Business of the University of Brawijaya.


2021 ◽  
Vol 33 (S1) ◽  
pp. 87-88
Author(s):  
J. Antonio Garcia-Casal ◽  
Natacha Coelho de Cunha Guimarães ◽  
Sofía Díaz Mosquera ◽  
María Alvarez Ariza ◽  
Raimundo Mateos Álvarez

Background:Rowland Universal Dementia Assessment Scale (RUDAS) is a brief cognitive test, appropriate for people with minimum completed level of education and sensitive to multicultural contexts. It could be a good instrument for cognitive impairment (CI) screening in Primary Health Care (PHC). It comprises the following areas: recent memory, body orientation, praxis, executive functions and language.Research Objective:The objective of this study is to assess the construct validity of RUDAS analysing its internal consistency and factorial structure.Method:Internal consistency will be calculated using ordinal Cronbach’s α, which reflects the average inter-item correlation score and, as such, will increase when correlations between the items increase. Exploratory Factor Analysis will be used to arrange the variables in domains using principal components extraction. The factorial analysis will include the extraction of five factors reflecting the neuropsychological areas assessed by the test. The result will be rotated under Varimax procedure to ease interpretation.Exploratory factor analysis will be used to arrange the variables in domains using principal components extraction. The analysis will include Kaiser–Meyer–Olkin measure of sampling adequacy and Bartlett’s test of sphericity. Estimations will be based based on Pearson’s correlations between indicators using a principal component analysis and later replicated with a tetrachoric correlation matrix. The variance in the tetrachoric model will be analysed to indentify convergent iterations and their explicative power.Preliminary results of the ongoing study:RUDAS is being administered to 321 participants older than 65 years, from seven PHC physicians’ consultations in O Grove Health Center. The data collection will be finished by August 2021 and in this poster we will present the final results of the exploratory factor analysis.Conclusions:We expect that the results of the exploratory factor analysis will replicate the results of previous studies of construct validity of the test in which explanatory factor weights were between 0.57 and 0.82, and all were above 40%. Confirming that RUDAS has a strong factor construct with high factor weights and variance ratio, and 6-item model is appropriate for measurement will support its recommendation as a valid screening instrument for PHC.


2021 ◽  
Vol 46 (3) ◽  
pp. 327
Author(s):  
Desi Pratisia ◽  
Bayu Nuswantara

The change in the choice of places for people to shop vegetables with online media can be influenced by various things such as the interest/interest of consumers both in terms of attractive products, convincing promotions, ease of transactions and purchasing processes, cheaper prices with quality services provided. Can be a reason for making a purchasing decision. The purpose of this study is to analyze consumer characteristics, analyze the process of purchasing vegetable decisions, and the relationship between marketing mix and service quality with vegetable purchasing decisions at Nyayur. id. The research method used is a quantitative research using non-probability sampling technique with purposive sampling as many as 60 respondents using the Nyayur.id application with the provision that they have shopped at least 2 times. The analytical techniques used are descriptive analysis, validity test, reliability test, and exploratory factor analysis using the KMO-MSA test (Kaiser-Meyer-Olkin of Measure Sampling Adequacy and Bartlett's Test, and rotation. The results of the study show that there are 8 factors formed. The new factors are promotion factors, product factors and decision-making processes, price factors, products and responsiveness, responsiveness and assurance factors, reliability and assurance factors, product factors, reliability factors, and responsiveness factors. 


2021 ◽  
pp. JNM-D-20-00028
Author(s):  
Hakime Aslan ◽  
Ümmühan Aktürk

Background/aimThis study was conducted to determine the validity and reliability of the Breast Cancer Cultural Beliefs Scale for women with breast cancer in Turkish society.Materials and methodsThe population of this study was composed of patients diagnosed with breast cancer who were treated for cancer in the Adult Chemotherapy Unit. A total of 178 women with breast cancer participated in this study.ResultsIn order to determine the factor structure of the scale, principal component analysis was performed. Cronbach's alpha was used to determine the reliability of the scale scores. The results explained 62.93% of the total variance of the scale. The result of the Kaiser–Meyer–Olkin test was determined to be 0.813, and that of Bartlett's test was 723.56. Cronbach's alpha coefficient of the scale was .74.ConclusionIt was determined that the Breast Cancer Cultural Beliefs Scale was a valid and reliable tool for assessing the cultural beliefs of women in Turkey.


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