reliability coefficient
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MaPan ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 347
Author(s):  
Maunah Setyawati ◽  
Habsanul Aisyah ◽  
Kusaeri Kusaeri

This study aims to develop assessment questions or instruments to measure students' numeration literacy skills integrated with the Islamic context. The research was conducted through 4 stages: initial assessment, design, test making, and a study of problem items then limited trials and analysis. The instruments used include algebra and statistics by taking the Islamic context of zakat material. Experts validated the instrument, and the validation results were analyzed using Aiken's formula. The instrument was also tested online and limited to 22 students of grade 8 MTsN 1 Surabaya. The test results were analyzed using product-moment correlation to determine its empirical validity and used alpha Cronbach to determine its reliability. The results showed that the 6 questions developed are valid with a validity value of 0.783. This result is reinforced by empirical validity results that show that the instruments developed are valid in terms of material/content, construct, and language. The reliability test results using alpha Cronbach obtained the reliability coefficient is 0.72. The instrument developed in this research is expected to be one of the references of students in practicing their numeracy skills and preparing to face national assessments by the Ministry of Education. Because it was found in this study that students have difficulty answering the question of numeration literacy with Islamic context. This case shows that students' numeration literacy skills are still low.


2021 ◽  
Vol 5 (2) ◽  
pp. 210-221
Author(s):  
Anis Faridah

This research is a study of quantitative descriptive. The purpose of this research is to describe the characteristics of final semester exam items for grade XI in the History subject at SMA Negeri 1 Pangkalpinang using the classical test theory approach. The research of the subject was 138 students of class XI in Social Sciences Major. The result of the research shows that final exam questions in the history subject class XI of SMA Negeri 1 Pangkalpinang are proper to use. This shows that from the validity of the items which there are 39 items of questions (97.5%) which are proven empirically valid with a 0.818 reliability coefficient. Other than that, there are 27 items of questions (67,5%) that can fulfill the criteria for the difficulty level, distinguishing power, and distractor function so it can be used directly to measure the student's ability without correction. While 12 items of questions (30%) need to be fixed and 1 item of question (2,5%) is declared to be invalid so it can't be used to measure the student's ability in History Subject. Permasalahan yang melatarbelakangi penelitian ini adalah pengembangan soal penilaian akhir semester mata pelajaran sejarah yang tidak melalui tahapan analisis butir soal sehingga kualitas butir soal tidak diketahui. Penelitian ini merupakan penelitian deskriptif kuantitatif. Tujuan penelitian ini adalah untuk mendeskripsikan karakteristik butir soal penilaian akhir semester mata pelajaran sejarah kelas XI SMA Negeri 1 Pangkalpinang menggunakan pendekatan teori tes klasik. Subjek penelitian berjumlah 138 peserta didik kelas XI jurusan IPS. Hasil penelitian menunjukkan bahwa soal PAS mata pelajaran sejarah kelas XI SMA Negeri 1 Pangkalpinang telah layak digunakan. Hal ini dibuktikan dari validitas butir soal yang mana terdapat 39 butir soal (97,5%) terbukti valid secara empirik dengan koefisien reliabilitas sebesar 0,818. Selain itu terdapat 27 butir soal (67,5%) yang memenuhi kriteria tingkat kesukaran, daya beda, dan keberfungsian distraktor sehingga dapat digunakan langsung untuk mengukur kemampuan peserta didik tanpa perbaikan. Sedangkan sebanyak 12 butir soal (30%) perlu dilakukan perbaikan dan 1 butir soal (2,5%) dinyatakan gugur sehingga tidak dapat digunakan untuk mengukur kemampuan peserta didik pada mata pelajaran sejarah.


2021 ◽  
Vol 13 (2) ◽  
pp. 982-989
Author(s):  
Wejdan Saad Abdullah ◽  
Dr. Najdat Abdel Raouf Abdel Reda

This research aims to (evaluating maps and illustrations in geography books for the preparatory stage). In order to answer the research questions, the researchers prepared two tools, the first tool represented the quality standard of maps, while the second tool represented the standard of photographers, and the map tool in its final form consisted of (51) fifty-one indicators distributed on (13) thirteen basic elements of the map and a visual variable, either The graphic tool included (39) thirty-nine indicators distributed over (12) twelve criteria, and the validity was confirmed by presenting them to the arbitrators. Stability through time, stability between two analysts, so the reliability coefficient reached: for the researcher over time for the maps criterion (91%) and for the graphics criterion (93%), and the reliability coefficient between the researcher and the other analysts for the maps criterion (88%) and for the graphics criterion (90%). To analyze the data, the researcher used the statistical methods and means represented by: Cooper's equation to calculate the reliability coefficient, frequencies, arithmetic mean and standard deviation to find out the degree of availability of each indicator and each criterion. Most of them were low for these books. As for the pictorial ones (pictures and drawings), the percentage of verification in the fourth and fifth grade book was higher than what was achieved in the sixth grade book.


2021 ◽  
Vol 9 (4) ◽  
pp. 877-883
Author(s):  
Ömer Sivrikaya ◽  

It is an important research topic to what extent the training received by the prospective teachers in order to have positive attitudes towards the handicapped is successful. This study aims to evaluate the effect of physical education and sports course for the handicapped on the attitudes of sports science students towards the handicapped. In the study, the "Attitude Toward Disabled Persons (ATDP) Scale", which was developed by Yuker and Block (1986) and adapted to Turkish by Özyürek (2006), was used as a data collection tool. The reliability coefficient of the scale was .67-.83, and the test-retest reliability coefficient was .76. A total of 76 students from Bülent Ecevit University School of Physical Education and Sports (n = 40) and Düzce University Faculty of Sport Sciences (n = 36) formed the study group who taking physical education and sports courses for the handicapped in the 2017-2018 academic year. The Kolmogorov-Smirnov test and independent samples t-test were used to analyze the data. Descriptive analyzes were conducted to determine the level of attitudes of the participants towards people who were handicapped. As a result of the research, it was determined that the attitude scores of the study group towards the handicapped were higher for the participants whose school type is faculty than those of the college. A difference in other parameters could not be detected.


Author(s):  
Николай Иванович Илькевич ◽  
Татьяна Владимировна Дзюбина ◽  
Жанна Вадимовна Калинина

Актуальность обусловлена, с одной стороны, необходимостью активной газификации крупных территориальных образований (строящихся новых жилых агломераций, коттеджных и дачных поселков, а также крупных промышленных комплексов). С другой стороны, продолжается увеличение общей протяженности газораспределительных систем и усложнение конфигурации схем газопроводов. Перечисленные факторы влияют на надежность работы газораспределительных систем и предъявляют высокие требования со стороны потребителей энергии к безаварийной их работе. Цель. Основная исходная надежностная информация, используемая для анализа надежности газопроводов, - это интенсивности отказов его элементов: отдельных участков линейной части, газоперекачивающих агрегатов и т.д., и интенсивности восстановления этих элементов. Эти показатели характеризуют такие свойства надежности как, безотказность и ремонтопригодность. Цель исследований заключается в оценке влияния показателей безотказности и ремонтопригодности оборудования на интегральные показатели надежности газораспределительной системы (ГС). К ним относятся математическое ожидание, дисперсия и среднеквадратическое отклонение (с.к.о.) пропускной способности ГС, а также коэффициент надежности газопровода. Методы: эквивалентирования, аналитический метод на уровне случайных Марковских процессов - схема «гибели и размножения», теоремы сложения и умножения вероятностей, композиция рядов распределения; математическая модель анализа надежности проектируемого магистрального газопровода (МГ). Результаты. На основе математической модели оценки надежности проектируемого магистрального газопровода и разработанной вычислительной программы были выполнены расчеты по определению интегральных показателей надежности условной газораспределительной системы. Исследования показали, что при изменении исходных показателей надежности (интенсивностей отказов и восстановлений) элементов ГС на одинаковую величину их влияние на изменение интегральных показателей надежности ГС имеет разную силу. Выводы. На основе предложенной математической модели анализа надежности ГС показано влияние показателей интенсивности отказов и интенсивности восстановлений элементов, характеризующих безотказность и ремонтопригодность газотранспортных систем, на ее интегральные показатели надежности, в частности, на коэффициент надежности. The Relevance of the research is due to the need for active gasification of large territorial entities (new residential agglomerations under construction, cottage and dacha settlements, as well as large industrial complexes). On the other hand, the increase in the total length of gas distribution systems and the complexity of the configuration of gas pipeline schemes continues. These factors affect the reliability of the gas distribution systems and place high demands on the part of energy consumers for trouble-free operation. Purpose. The main initial reliability information used for analyzing the reliability of gas pipelines is the failure rates of its elements: individual sections of the linear part, gas pumping units, etc., and the recovery rates of these elements. These indicators characterize such properties of reliability as reliability and maintainability. The purpose of the research is to assess the impact of reliability and maintainability of equipment on the integral reliability indicators of the gas distribution system (GDS). These include the expectation, variance and standard deviation of the throughput of the GDS, as well as the reliability coefficient of the pipeline. Methods: equivalent methods, analytical method at the level of random Markov processes - the scheme of "death and reproduction", the theorem of addition and multiplication of probabilities, the composition of distribution series; mathematical model of reliability analysis of the designed main gas pipeline. Results. On the basis of a mathematical model for assessing the reliability of the designed main gas pipeline and the developed computational program, calculations were performed to determine the integral indicators of the reliability of the conventional gas distribution system. So, studies have shown that when the initial reliability indicators (failure rates and recoveries) of the GDS elements are changed by the same amount, their effect on the change in the integral reliability indicators of the GDS has a different effect. Conclusion. On the basis of the proposed mathematical model for analyzing the reliability of the GDS, the influence of the failure rate indicators and the recovery rate of elements characterizing the reliability and maintainability of gas transmission systems on its integral reliability indicators, in particular, on the reliability coefficient, is shown.


2021 ◽  
Vol 4 (1) ◽  
pp. 37-47
Author(s):  
Ouma Omito

The study assessed the readiness levels of public primary schools in Homa Bay County for the integration of digital teaching and learning. A population of 556 teachers in public primary schools that had already received Digital Literacy Programme (DLP) devices for teaching and learning were used whereby a sample size of 56 teachers was reached at. 12 teachers were also interviewed. A reliability coefficient of 0.962 was obtained. Interview questions that were unclear were either modified or removed. Content validity confirmed the appropriateness of the content and the research tools used during the study. Findings from observation checklists were analysed quantitatively by use of descriptive statistics. Data from interviews were transcribed, coded and grouped into major themes and then reported. The study found that majority of the sample schools (55.4%) had not started teaching using DLP. The study also showed that teachers who were practicing using the DLP devices were more proficient in computer use compared to those who either kept or feared using such devices for educational activities. The study concluded that the government’s initiative of digitalizing schools was a noble idea that needed to be embraced by all sectors of the economy.


2021 ◽  
Vol 2 ◽  
pp. 79-84
Author(s):  
Shonia Dwiasa Pangukir ◽  
Dyah Astorini Wulandari

This study aims to conduct a trial to determine the validity and reliability of the self-regulation scale and determine what dimensions/aspects are considered capable of forming self-regulation variables. Validity and reliability tests are carried out to determine a measuring instrument’s level of accuracy and consistency. This self-regulation variable is measured by the seven dimensions of Miller & Brown (Neal & Carey, 2005), namely receiving, evaluating, triggering, searching, formulating, implementing, and assessing. Thirty-six students at Islamic boarding school X in Banyumas, Indonesia, were involved as participants. Analysis of the data used to measure validity using the corrected item-total correlation formula and reliability using Cronbach’s alpha, which was analyzed using SPSS version 25. The analysis results prove that from the seven dimensions of self-regulation, there are 25 valid items and have a reliability coefficient of 0.908. Thus, the self-regulation scale can be used for research.


SAGE Open ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 215824402110503
Author(s):  
Diğdem Müge Siyez ◽  
Gülsüm Songül Ercan ◽  
Erol Esen ◽  
Yağmur Soylu ◽  
Bahar Baran ◽  
...  

The aim of this study was to develop a scale to measure the attitudes of the university academic and administrative staff and students toward sexual harassment and assault, and examine its psychometric properties. After the development of the item pool and examination of the content validity of the intended items, Exploratory Factor Analysis (EFA) and parallel analysis was conducted and Cronbach’s alpha reliability coefficient was calculated collecting data from 150 participants (54.7% of female and 45.3% of male) for the initial version (comprised of 12 items) of the Attitudes Toward Sexual Harassment and Assault Scale (ATSHAS). In the second phase, Confirmatory Factor Analysis (CFA) was conducted with 354 participants (54% of female and 46% of male) for the revised version (10 items) of the ATSHAS. Additionally, Cronbach’s alpha reliability coefficient was calculated with second sample. After developing the item pool, the completion of the first phase of the study took 5 months, and the second phase took 4 months. The final version of the ATSHAS consisting of nine items demonstrated sufficient psychometric properties for measuring attitudes toward sexual harassment and assault in the university environment.


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