scholarly journals Kualitas butir bank soal statistika (Studi kasus: Instrumen ujian akhir mata kuliah statistika Universitas Terbuka)

2019 ◽  
Vol 6 (2) ◽  
pp. 165-176
Author(s):  
Agus Santoso ◽  
Kartianom Kartianom ◽  
Gulzhaina K. Kassymova
Keyword(s):  
Poor Quality ◽  
Reliability Coefficient ◽  
Dominant Factor ◽  
Accurate Information ◽  
Final Exam ◽  
Good Reliability ◽  
Economic Statistics ◽  
Statistics Course ◽  
Statistics Courses

Penelitian ini bertujuan untuk mendeksripsikan kualitas butir soal ujian akhir semester mata kuliah statistika ekonomi yang dikembangkan oleh Universitas Terbuka (UT) sebagai dasar dalam mengembangkan bank soal yang terkalibrasi menggunakan pendekatan Teori Respons Butir. Penelitian ini merupakan penelitian deskriptif kuantitatif. Sumber data penelitian ini adalah pola jawaban mahasiswa UT yang telah mengikuti ujian akhir semester (UAS) mata kuliah statistika ekonomi selama enam masa ujian, dengan ukuran sampel sebanyak 23334 mahasiswa. Hasil penelitian ini menunjukkan bahwa butir-butir soal ujian akhir semester mata kuliah statistika ekonomi yang dikembangkan UT: (1) terbukti valid secara konstruk, yakni hanya mengukur satu faktor dominan, yaitu kemampuan statistika ekonomi; (2) memiliki kehandalan yang baik dengan nilai koefisien reliabilitas empiris lebih dari 0,70 (koefisien reliabilitas empiris = 0,7335); (3) dari 140 butir soal yang dikalibrasi terdapat 108 butir soal (25 butir soal berkualitas baik atau tanpa revisi dan 83 butir soal berkualitas kurang baik atau perlu revisi) yang layak disimpan dalam bank soal, sedangkan 32 butir soal berkualitas tidak baik; dan (4) mampu memberikan informasi akurat terkait kemampuan statistika ekonomi mahasiswa pada level kemampuan yang tinggi (-1,3 sampai +4,0). Quality of statistical test bank items (Case study: Final exam instrument of statistics courses in Universitas Terbuka) AbstractThis study aims to determine the quality of final semester test items of economic statistics course that was developed by Universitas Terbuka (UT) as a basis for developing calibrated item banks using Item Response Theory. This research uses a quantitative descriptive approach. The researcher investigates the answer pattern of the final semester exam (UAS) in the economic statistics course during six periods of the final exams. The sample size in this study was 23334 students. The results of this study indicate that the final semester exam items of economic statistics courses developed by UT: (1) proved to construct valid, i.e. only measure one dominant factor, namely the ability of economic statistics; (2) has good reliability with empirical reliability coefficient values more than 0.70 (empirical reliability coefficient = 0.7335); (3) of the 140 items calibrated there are 108 items (25 items of good quality or without revision and 83 items of poor quality or need to be revised) that are worth keeping in the question bank, while 32 items of quality are not good; and (4) able to provide accurate information related to students' economic statistical abilities at a high level of ability (-1.3 to +4.0)

The Quality Analysis of Hallux Valgus Videos on YouTube

2021 ◽  
Author(s):  
Enes Sari ◽  
Levent FAZLI Umur
Keyword(s):  
Hallux Valgus ◽  
Information Quality ◽  
Statistical Significance ◽  
Poor Quality ◽  
Quality Analysis ◽  
Accurate Information ◽  
Youtube Videos ◽  
The Mean ◽  
The Difference

BACKGROUND:The aim of this study was to evaluate the information quality of YouTube videos on hallux valgus. METHODS:A YouTube search was performed using the keyword 'hallux valgus' to determine the first 300 videos related to hallux valgus. A total of 54 videos met our inclusion criteria and evaluated for information quality by using DISCERN, Journal of the American Medical Association (JAMA) and hallux valgus information assessment (HAVIA) scores. Number of views, time since the upload date, view rate, number of comments, number of likes, number of dislikes, video power index (VPI) values were calculated to determine video popularity. Video length (sec), video source and video content were also noted. The relation between information quality and these factors were statistically evaluated. RESULTS:The mean DISCERN score was 30.35{plus minus}11.56 (poor quality) (14-64), the mean JAMA score was 2.28{plus minus}0.96 (1-4), and the mean HAVIA score was 3.63{plus minus}2.42 (moderate quality) (0.5-8.5). Although videos uploaded by physicians had higher mean DISCERN, JAMA, and HAVIA scores than videos uploaded by non-physicians, the difference was not statistically significant. Additionally, view rates and VPI values were higher for videos uploaded by health channels, but the difference did not reach statistical significance. A statistically significant positive correlation was found between video length and DISCERN (r= 0.294, p= 0.028), and HAVIA scores (r= 0.326, p= 0.015). CONCLUSIONS:This present study demonstrated that the quality of information available on YouTube videos about hallux valgus was low and insufficient. Videos containing accurate information from reliable sources are needed to educate patients on hallux valgus, especially in less frequently mentioned topics such as postoperative complications and healing period.

scholarly journals Assessing the Quality of Patient Information for Cholesteatoma on the Video Sharing Platform YouTube

2021 ◽  
Author(s):  
Rithvik Reddy ◽  
Horace Cheng ◽  
Nicholas Jufas ◽  
Nirmal Patel
Keyword(s):  
Video Quality ◽  
Scoring Systems ◽  
Poor Quality ◽  
Cross Sectional Survey ◽  
Kappa Score ◽  
Good Reliability ◽  
Cross Sectional ◽  
Youtube Videos ◽  
Scoring Tool

Objectives: The objective of this study is to assess quality of the most popular cholesteatoma videos on YouTube using recognized scoring systems and to determine if video quality metrics correlated with video popularity based on likes and views Design: Cross sectional survey of available data Setting: Metadata acquisition using YouTube searches using Australian IP addresses Participants: Three independent neuro-otologists partaking in scoring videos Main outcome measures: Each video was viewed and scored by three independent assessors using both a novel tool to score the usefulness of the video as well as the validated DISCERN scoring tool. Popularity metrics were analyzed and compared to video popularity. Results: A total of 90 YouTube videos were analyzed with an average 55,292 views per video with an average of 271 likes and 22 dislikes. The inter-rater correlation was moderate with Fleiss-kappa score 0.42 [P < 0.01] using a novel scoring tool for cholesteatoma and inter-rater correlation coefficient was 0.78 [95% CI = 0.58 - 0.90] indicating good reliability for DISCERN scores. The overall video quality was poor with higher DISCERN scores found in videos uploaded from Academic Institutions. Conclusions: Informative video quality on YouTube on cholesteatoma is overall of poor quality. Videos with unclassified sources or more dislikes correlated poorly with video quality. Given the increase in patients turning to the internet for information regarding their health conditions, otology and otolaryngology societies should be encouraged to publish high quality YouTube videos on cholesteatoma and other ear conditions.

scholarly journals Pemetaan kualitas empirik soal ujian akhir semester pada mata pelajaran Bahasa Indonesia SMA di Kabupaten Klaten

2017 ◽  
Vol 21 (2) ◽  
pp. 142-152 ◽  
Author(s):  
Yulinda Erma Suryani
Keyword(s):  
High School ◽  
Senior High School ◽  
Reliability Coefficient ◽  
Final Exam ◽  
Empirical Validity ◽  
Discriminating Power ◽  
Academic Year ◽  
Bahasa Indonesia ◽  
Year 2013

Tujuan penelitian ini adalah untuk mengetahui kualitas empirik soal  Mata Pelajaran Bahasa Indonesia yang digunakan dalam pelaksanaan ujian akhir semester SMA di Kabupaten Klaten dalam empat tahun terakhir. Jenis penelitian ini adalah deskriptif kuantitatif. Metode pengumpulan data yang digunakan dalam penelitian ini adalah dokumentasi yang mengutip respon jawaban 1125 peserta didik pada ujian akhir semester tingkat SMA di Kabupaten Klaten pada Mata Pelajaran Bahasa Indonesia kelas X pada Tahun Pelajaran 2011/2012 sampai Tahun Pelajaran 2014/2015. Analisis kualitas empirik soal ujian akhir semester meliputi: tingkat kesukaran, daya pembeda, efektivitas distraktor, validitas dan reliabilitas. Berdasarkan hasil analisis data dapat diketahui bahwa tingkat kesukaran butir soal ujian akhir semester di Kabupaten Klaten pada Tahun Pelajaran 2011/2012 kategori mudah sebanyak 64%, sedang 24 % dan sukar 12%. Pada Tahun Pelajaran 2012/2013 78% soal mudah, 12% sedang 10% sukar 10%. Pada tahun pelajaran 2013/2014 12% soal mudah, 14% sedang dan 74% sukar. Pada tahun pelajaran 2014/2015  64% mudah, 16% sedang dan 28% sukar.  Daya pembeda soal ujian akhir semester pada tahun pelajaran 2011/2012 yang memenuhi kriteria sebanyak 62%, pada Tahun Pelajaran 2012/2013 sebanyak 76%, pada tahun pelajaraan 2013/2014 sebanyak 62%, pada Tahun Pelajaran 2014/2015 sebanyak 64%. Distraktor pada soal ujian akhir semester Tahun Pelajaran 2011/2012 dapat berfungsi dengan baik sebanyak 86%, pada Tahun Pelajaran 2012/2013 sebanyak 90%, pada Tahun Pelajaran 2013/2014 sebanyak 76%, pada Tahun Pelajaran 2014/2015 sebanyak 90%. Hasil analisis validitas empirik pada soal ujian akhir semester tahun pelajaran 2011/2012 diperoleh 36% butir yang valid dengan nilai koefisien reliabilitas sebesar 0,232. Pada soal ujian akhir semester tahun pelajaran 2012/2013, 56% butir soal valid dengan nilai koefisien reliabilitas 0,428. Koefisien reliabilitas soal ujian akhir semester pada tahun pelajaran 2013/2014 diperoleh sebesar 0,238 dengan butir soal yang valid 40%. Validitas empirik pada ssoal ujian akhir semester tahun pelajaran 2014/2015 sebesar 50% butir soal valid dengan nilai koefisien reliabilitas sebesar 0,603. MAPPING OF APPING OF THE EMPIRICAL QUALITY OF INDONESIAN LANGUAGE SUBJECT FINAL EXAM FOR SENIOR HIGH SCHOOL IN KLATEN REGENCYAbstractThis research aims at determining the empirical quality of Indonesian Language subject test questions used for Final Exam  for senior high school in Klaten Regency within the last four years. This research uses a descriptive quantitative method. The data for this research were collected by means of documentation. Documentation that cites the responses of the students of the final exam of high school semester in Klaten Regency on the Indonesian Language Subject of class X in the 2011/2012 Year Learning Year until the 2014/2015 Lesson Year which amounts to 1125 students. Empirical quality analysis of the final exam of the semester include: item difficulty, discriminating power, distractor effectiveness, validity and reliability. Based on the results of data analysis can be seen that the level of difficulty item semester final exam in Klaten regency in the academic year 2011/2012 easy categories as much as 64%, while 24% and 12% difficult. In school year 2012/2013 78% easy problem, 12% medium 10% difficult 10%. In the academic year 2013/2014 12% easy questions, 14% medium and 74% difficult. In academic year 2014/2015 64% easy, 16% medium and 28% difficult. The discriminating power of final exam of semester in academic year 2011/2012 that have qualified as much as 62%, Lessons 2012/2013 as much as 76%, 62/2014 years of education as much as 62%, Lesson 2014/2015 as much as 64%. Distractor at the end of semester exam in the academic year 2011/2012 to function properly as much as 86%, in the Academic Year 2012/2013, as much as 90%, in the Academic Year 2013/2014 by 76%, in the Academic Year 2014/2015 by 90%. The results of empirical validity analysis on the final exam of the academic year 2011/2012 obtained 36% valid grain with the value of reliability coefficient of 0.232. On the matter of the final exam of the year 2012/2013 academic year, 56% items are valid with the value of reliability coefficient of 0.428. Reliability coefficient about final exam of semester in academic year 2013/2014 obtained equal to 0,238 with item 40% valid matter. Empirical validity in semester test case final year 2014/2015 amounted to 50% items valid with reliability coefficient value of 0.603

scholarly journals Identifikasi Kesulitan Belajar Mahasiswa pada Mata Kuliah Statistika Selama Masa Pandemi Covid-I9

2021 ◽  
Vol 21 (1) ◽  
pp. 148
Author(s):  
Deci Ririen ◽  
Dewi Hartika
Keyword(s):  
Online Learning ◽  
Environmental Factors ◽  
Student Learning ◽  
Research Method ◽  
Learning Difficulties ◽  
Dominant Factor ◽  
Research Subjects ◽  
Tertiary Institutions ◽  
Statistics Course ◽  
Statistics Courses

The length of the online learning period in tertiary institutions that has lasted for approximately 10 months has made students uneasy, because the majority of students consider statistics courses to be difficult to understand, especially with the Covid-19 pandemic conditions. The purpose of this study was to determine the factors that caused student learning difficulties in the Statistics course during the Covid-19 pandemic and to determine the dominant factors causing student learning difficulties in the Statistics course during the Covid-19 pandemic. The research subjects were STIE-Indragiri students taking Statistics courses. Instruments of the research method through questionnaires and interviews with research subjects. The results obtained were the factors that made learning difficulties for students in the statistics course during the Covid-19 pandemic, namely the factors themselves, lecturers' factors, environmental factors / parents as well as facilities and infrastructure factors. The most dominant factor affecting student learning difficulties in statistics courses during the Covid-19 pandemic was the infrastructure factor with a TCR value of 64.38%.

The Poor Quality of Official Socio-Economic Statistics Relating to the Rural Tropical World: With Special Reference to South India

1984 ◽  
Vol 18 (3) ◽  
pp. 491-514 ◽  
Author(s):  
Polly Hill
Keyword(s):  
Household Income ◽  
South India ◽  
Poor Quality ◽  
West African ◽  
Main Concern ◽  
The West ◽  
Rural Economies ◽  
Economic Statistics ◽  
Professional Field

My main concern in this article is with statistics relating to such basic matters as the sizes of farm-holdings, the output and yield of crops, household income and expenditure, occupational statistics, cattle ownership, the sizes of villages, etc.—though I shall also range more widely. While the distinct and professional field of demographic statistics is necessarily outside my scope, I shall criticize some features of the Karnataka population census.Although since 1953 most of my fieldwork has been undertaken in the West African countryside, I am obliged to take most of my examples of bad statistics from south India, since West African statistics, which were never abundant, are now scantier than ever. Throughout my discussion I take it for granted that the lack of reliable statistics gravely impairs our understanding of the working of tropical rural economies.

scholarly journals Analysis on Product Quality of Semi Refined Carrageenan using Six Sigma and Cost of Poor Quality

2020 ◽  
Vol 9 (3) ◽  
pp. 195-202
Author(s):  
Syamsul Bahri ◽  
◽  
Fachriah Nur Rahmadani ◽  
Armin Darmawan ◽  
◽  
...  
Keyword(s):  
Moisture Content ◽  
Production Process ◽  
Product Quality ◽  
Six Sigma ◽  
Poor Quality ◽  
Raw Material ◽  
Dominant Factor ◽  
Pareto Chart ◽  
Cost Of Poor Quality

The study aimed to minimize defective products to improve the production process quality of PT BI by identifying the most types of defects, calculating Defect per Million Opportunities (DPMO) value, suggesting the quality improvement of the Semi Refined Carrageenan (SRC) production process, and calculating Cost of Poor Quality (COPQ) value. The methods used in this research were Six Sigma and the COPQ. The priority improvement based on the Pareto chart was moisture defects with the percentage of damage of 36.9%. The Sigma level of the production process of PT BI was 3.42 with a defect rate of 27,429 DPMO. The analysis on the cause and effect diagram showed that factors affected the occurrence of defective products were error in reading on moisture content, diverse raw material, the wrong method of mixing raw materials prior to production process, and the lack of inspectors of production process. The most influential-dominant factor was the obsolete machine which causes error in reading on moisture content. The company can take preventive and corrective actions to suppress defective products and improve product quality. Based on the calculation of the COPQ, the costs that must be incurred by the company due to defective products was IDR 1,007,690,694.

scholarly journals Analisis Butir Soal Semester Ganjil Mata Pelajaran Matematika pada Sekolah Menengah Pertama

2019 ◽  
Vol 8 (1) ◽  
pp. 57-68
Author(s):  
Anetha L. F. Tilaar ◽  
Hasriyanti Hasriyanti
Keyword(s):  
Descriptive Analysis ◽  
Multiple Choice ◽  
Poor Quality ◽  
Mathematics Students ◽  
Multiple Choice Questions ◽  
Final Exam ◽  
School Year ◽  
Data Collection Technique ◽  
Distinguishing Features

Abstract The results of the initial interview, it was revealed that every time the final school exam was conducted, the questions tested had not been analyzed as a whole, so the quality of the questions was unknown. Therefore this study aims to analyze the odd semester final exam items in mathematics in SMP Negeri 4 Pineleng in the 2018/2019 school year in terms of reliability, validity, distinguishing features, level of difficulty and effectiveness of deceivers (specifically multiple choice questions). This type of research is a descriptive analysis with a quantitative approach. The number of subjects in this study were 97 students consisting of all VIII grade students of SMP Negeri 4 Pineleng in the 2018/2019 school year. The data collection technique used is documentation. The data is processed manually with the help of the excel program and uses the help of the Anatest Version 4 program specifically to analyze effectiveness. From the results of the analysis it can be concluded that the final semester exams for the mathematics students of SMP Negeri 4 Pineleng in the 2018/2019 school year: (1) Types of multiple choice questions, 5 questions or 16.67% have very good quality so they can be stored in the question bank for reuse , 15 questions or 50.00% still need to be revised and 10 questions or 33.33% have very poor quality so that they cannot be stored in the question bank. (2) The types of description questions, 2 questions or 40.00% have good quality, 2 questions or 40.00% need to be revised, 1 problem or 20.00% have bad quality.AbstrakHasil wanwancara awal, terungkap bahwa setiap pelaksanaan ujian akhir sekolah, soal yang diujikan belum dianalisis secara keseluruhan, sehingga kualitas soal tersebut tidak diketahui. Oleh karena itu penelitian ini bertujuan untuk menganalisis butir soal ujian akhir semester ganjil mata pelajaran matematika SMP Negeri 4 Pineleng tahun ajaran 2018/2019 ditinjau dari reliabilitas, validitas, daya pembeda soal, tingkat kesukaran dan efektifitas pengecoh (khusus soal pilihan ganda). Jenis penelitian ini adalah analisis deskriptif dengan pendekatan kuantitatif. Jumlah subjek dalam penelitian ini adalah 97 siswa terdiri dari seluruh siswa kelas VIII SMP Negeri 4 Pineleng tahun ajaran 2018/2019. Teknik pengumpulan data yang digunakan adalah dokumentasi. Data diolah secara manual dengan bantuan program excel dan menggunakan bantuan program Anatest Versi 4 khusus untuk menganalisis efektifitas. Dari hasil analisis dapat disimpulkan bahwa ujian akhir semester ganjil mata pelajarn matematika SMP Negeri 4 Pineleng tahun ajaran 2018/2019 : (1) Jenis soal pilihan ganda, 5 soal atau 16.67% memiliki kualitas sangat baik sehingga dapta disimpan di bank soal untuk dapat digunakan kembali, 15 soal atau 50.00% masih perlu direvisi dan 10 soal atau 33.33% memiliki kualitas sangat tidak baik sehingga tidak dapat disimpan di bank soal. (2) Jenis soal uraian, 2 soal atau 40.00% memiliki kualitas baik, 2 soal atau 40.00% perlu direvisi, 1 soal atau 20,00% meiliki kualitas tidak baik. 

An Initial Investigation of the Use of Comparative Referents to Assess Social Anxiety

2018 ◽  
Vol 34 (6) ◽  
pp. 367-375 ◽  
Author(s):  
Laura D. Seligman ◽  
Erin F. Swedish ◽  
Jason P. Rose ◽  
Jessica M. Baker
Keyword(s):  
Social Anxiety ◽  
Discriminant Validity ◽  
Self Report ◽  
Injunctive Norms ◽  
Good Reliability ◽  
Convergent And Discriminant Validity ◽  
Excellent Internal Consistency ◽  
Social Quality Of Life ◽  
Comparison Measures

Abstract. The current study examined the validity of two self-report measures of social anxiety constructed using social comparative referent points. It was hypothesized that these comparison measures would be both reliable and valid. Results indicated that two different comparative versions – one invoking injunctive norms and another invoking descriptive norms – showed good reliability, excellent internal consistency, and acceptable convergent and discriminant validity. The comparative measures also predicted positive functioning, some aspects of social quality of life, and social anxiety as measured by an independent self-report. These findings suggest that adding a comparative reference point to instructions on social anxiety measures may aid in the assessment of social anxiety.

An experience of performing spirometry by trained general practitioners

2020 ◽  
pp. 34-36
Author(s):  
M. A. Pokhaznikova ◽  
E. A. Andreeva ◽  
O. Yu. Kuznetsova
Keyword(s):  
General Practitioners ◽  
Quality Criteria ◽  
Poor Quality ◽  
Male Gender ◽  
Study Research ◽  
The Poor ◽  
Quality Of Research ◽  
Forced Expiratory Maneuver ◽  
Maximal Effort

The article discusses the experience of teaching and conducting spirometry of general practitioners as part of the RESPECT study (RESearch on the PrEvalence and the diagnosis of COPD and its Tobacco-related aetiology). A total of 33 trained in spirometry general practitioners performed a study of 3119 patients. Quality criteria met 84.1% of spirometric studies. The analysis of the most common mistakes made by doctors during the forced expiratory maneuver is included. The most frequent errors were expiration exhalation of less than 6s (54%), non-maximal effort throughout the test and lack of reproducibility (11.3%). Independent predictors of poor spirogram quality were male gender, obstruction (FEV1 /FVC<0.7), and the center where the study was performed. The number of good-quality spirograms ranged from 96.1% (95% CI 83.2–110.4) to 59.8% (95% CI 49.6–71.4) depending on the center. Subsequently, an analysis of the reasons behind the poor quality of research in individual centers was conducted and the identified shortcomings were eliminated. The poor quality of the spirograms was associated either with the errors of the doctors who undertook the study or with the technical malfunctions of the spirometer.

KUALITAS HIDUP PASIEN STROKE DI POLIKLINIK RAWAT JALAN RUMAH SAKIT SWASTA YOGYAKARTA

2019 ◽  
Vol 7 (3) ◽  
pp. 232-237
Author(s):  
Hana Larasati ◽  
Theresia Titin Marlina
Keyword(s):  
Quality Of Life ◽  
Social Relations ◽  
Hemorrhagic Stroke ◽  
Poor Quality ◽  
Social Dimension ◽  
Stroke Patients ◽  
Sampling System ◽  
Post Stroke ◽  
Psychological Dimension

Background: stroke is a disorder of nervous system function that occurs suddenly and is caused by brain bleeding disorders that can affect the quality of life physical dimensions, social dimensions, psychological dimensions, environmental dimensions. Based on the result of Lumbu study (2015) the number of samples were 71 people collected data using the (WHOQOL-BREF). There were 56 people (78,9%) had the poor quality of life of post stroke. The mean of post-stroke quality of life domain was physical domain (45,27%), psychological domain (49,87%), social relations domain (48,15%) and environmental domain (50.01%). Objective: the purpose of the study was know the quality of life of the stroke patients in Outpatient Polyclinic of Private Hospital in Yogyakarta. Methods: used descriptive quantitative by using questionnaire test of purposive sampling system based on patients who have been affected of ischemic or hemorrhagic stroke before, number 30 respondents. Result: quality of life of stroke patient of medium physical dimension (67%), psychological dimension (71%), social dimension (67%), dimension good environment (63%). Conclusion: the quality of life of stroke patients of physical dimension, psychological dimension, and moderate social dimension, while the quality of life of stroke patients were good environmental dimension.   Keywords: Hemorrhagic stroke, ischemic stroke, quality of life

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