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Sigma&Mu: Journal of Mathematics, Statistics and Data Science
Published by Balai Publikasi Indonesia
ISSN : 29872030     EISSN : 29872049     DOI : https://doi.org/10.56566/sigmamu
Core Subject : Education,
Education Mathematics
Sigma&Mu: Journal of Mathematics, Statistics and Data Science is an international peer-reviewed journal that publishes original and high-quality research papers in all areas of mathematics, statistics, and data sciences. As an important academic exchange platform, scientists and researchers can know the most up-to-date academic trends and seek valuable primary sources for reference. The subject areas include, but are not limited to the following fields: Pure and Applied Mathematics, Mathematics Education, Optimizations, Pure and Applied Statistics, Statistics Education, Experimental Designs, Survey Methodology, Spatial Statistics, Multivariate Statistics, Time Series Analysis, Statistical Modeling, Bayesian Statistics, Climate Modeling, Environmental Statistics, Engineering Statistics, Statistics for Social Sciences, Medical Statistics, Chemometric, Bioinformatics, Big Data Analytics, Deep Learning, Sentiment Analysis, and Classification Modeling.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 28 Documents
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The Influence of Cooperative Learning Model Type Think Talk Write (TTW) on Students Mathematical Communication Skills Siti Jaizah Faridah; Nurul Hikmah; Syahrul Azmi
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 1 (2025): March
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i1.239

Abstract

This research was conducted to determine the effect of cooperative learning model type think talk write (TTW) on mathematical communication skills in students of SMPN 13 Mataram class VIII on statistics material. Quantitative approach with quasi experimental method was used in this research. The population in this study was all VIII grade students of SMPN 13 Mataram consisting of five classes, with a sample consisting of two classes, namely class VIII E as an experimental class using the cooperative learning model of think talk write (TTW) type and class VIII A as a control class using direct learning model. Data collection techniques used observation sheets, documentation, and tests. The results of data analysis showed that there was an average difference between the experimental and control classes. The t-test results obtained a t-count value of 2,939, and the t-table value obtained a value of 1,669, indicating that the t-count value was greater than the t-table. Thus, the Think Talk Write (TTW) cooperative learning model has a positive effect on students' mathematical communication skills. This research suggests the application of TTW model as an effective learning strategy to improve students' mathematical communication skills at junior high school level
Metric Dimension of the Pinwheel Subdivision Graph K_1+mK_3 Vetty Sugiarty; Amrullah Amrullah; Nurul Hikmah
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 1 (2025): March
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i1.251

Abstract

Metric dimension is an important concept in graph theory that is widely used in various fields, including navigation, network localization, and network design. The concept of metric dimension is the concept of determining the least marker vertex so that each vertex in the graph is distinguished from each other. The purpose of this research is to determine the metric dimension of the pinwheel subdivision graph ????1+????????3. The type of research used is pure research. By using graph structure and vertex distance analysis, this paper shows the value of the metric dimension of the subdivision graph ????(????,????), specifically on the pinwheel graph ????=????1+????????3 for 2≤????≤4. The results show that the metric dimension of the pinwheel subdivision graph ????1+????????3 is one less than the metric dimension of the pinwheel graph before subdivision, ????????????(????(????,????))=????????????(????)−1.
Paddy Price Prediction using Fuzzy Time Series Model Lee Method for Determination of Crop Insurance Premiums Agus Sofian Eka Hidayat; Deati Amanifalah; Gilang Primajati
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 2 No. 2 (2024): September
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v2i2.280

Abstract

The price of the paddy has significant fluctuations as BPS mentioned that the average price of dry  paddy harvested at the farmer level decreased in February 2022 by 3.2% from January 2022. Hence, crop industry businesses continue to face significant uncertainty risk. The purpose of this study is to discuss the use of the Fuzzy Time Series Model Lee for predicting future paddy prices in order to calculate crop insurance premium using Black Scholes model with cash or nothing put option approach. This is because crop industry is one of the agricultural products that Indonesia is capable of producing in large quantities. As a result, crop insurance should be purchased by farmers to protect against crop yield losses. Aside from that, the price of paddy fluctuates significantly. Therefore to reduce the loss of revenue from reductions in decreasing of crop yield or even crop failure, it needs to provide the insurance based on the paddy prices to protect the paddy prices itself from the large fluctuations at the farmer level. Based on the analysis of this study, generates result for January 2022, February 2022, and March 2022 are 4547.41, 4547.41, and 4701.62 respectively. With the accuracy level is 0.05%. Therefore, the insurance premiums based on the prediction result is 2,775,579. The implication or benefit of this thesis is for the other parties such as farmer
Analysis of The Competition Model of Two Populations Around The Orbit of The Equilibrium Point Gilang Primajati; Titis Rizki Mardianti; M. Gunawan Supiarmo; Agus Sofian Eka Hidayat
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 2 No. 2 (2024): September
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v2i2.283

Abstract

The competition of two populations model that represented in an ordinary differential equations system. This model describes about the competition of two population in general that is consist of the interspesies competition and the intraspesies competition. In ecology, the population dynamic is closely related to population growth, equilibrium, and stability. Equilibrium is represented by a point called the equilibrium point or fixed point. By analyzing the stability around the fixed point, it can be seen the carrying capacity of a system, which mean the optimal number of individual that can be supported by the environment. According to the analysis of the model obtained 4 fixed points, three of them are unstable and the other else is stable. The orbit of the system around fixed point visualized using software. The behavior orbit around fixed point of the model will move away from the unstable fixed point and move closer to the stable fixed point.
Practical Implications of Parabolas Shivam Kumar Sah; Suresh Kumar Sahani; Kameshwar Sahani
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 1 (2025): March
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i1.319

Abstract

This project highlights the significance of parabolas in technology, science, and architecture while examining their various everyday uses. Because they can concentrate sound waves at a particular location, parabolic shapes are essential in the construction of satellite dishes, automobile headlights, and flashlights. This project illustrates how mathematics and practical problem-solving structural stability and visual appeal. This project illustrates how mathematics and practical problem solving interact by jamming the uses of parabolas, showing how a straightforward geometric shape can transform technology and enhance everyday life.
The Effectiveness Of Using TPACK-Integrated Learning Media On The Learning Outcomes Of Exponentiation Among Eighth-Grade Students Rizkiana, Nila; Sridana, Nyoman; Kurniawan, Eka
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 2 (2025): September
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i2.347

Abstract

The background of this study is the low student learning outcomes, the ineffective learning process, and the lack of teacher interaction. This research aims to examine the effectiveness of using TPACK-integrated learning media on the learning outcomes of exponent numbers among eighth-grade students at SMP Negeri 1 Kediri. The research approach used is quantitative, with a research design of Pretest-Posttest Only Control Group Design. The population in this study includes all eighth-grade students at SMPN 1 Kediri, and the sampling technique used is purposive sampling. The selected sample consists of class VIIIC as the control group and class VIIIE as the experimental group. The research instruments include test questions, observations, and student response questionnaires. The data analysis techniques used in this study are descriptive and inferential statistical analysis. The learning media used include instructional videos, Liveworksheets-based LKPD, and Kahoot. The results of the study indicate that the use of TPACK-integrated learning media is effective in improving the learning outcomes of exponent numbers among eighth-grade students at SMP Negeri 1 Kediri in the 2024/2025 academic year. This effectiveness is demonstrated by: (1) An increase in the average learning outcomes of the experimental class by 0.7342, which falls into the high category. (2) A significant difference in the average mathematics learning outcomes between the control and experimental classes, as indicated by the independent sample t-test, where t_calculated > t_table (6.104 > 2.005).
Analysis of students' mathematical problem solving ability in solving minimum competency assessment questions on algebra content Listia; Milla; Riski; Djamilah, Soraya
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 2 (2025): September
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i2.370

Abstract

Problem solving ability is a mathematical ability that students must have in learning mathematics. Mathematical problem solving in algebraic material is a problem that must be solved using algebraic methods, in solving it there are many obstacles that cause students to make mistakes in the problem solving process. This study aims to analyze the mathematical problem solving ability of VIII grade students in solving Minimum Competency Assessment questions on algebra content. This research uses qualitative research methods. The research instruments used test questions and interviews. The test questions given were AKM with algebra content. The test questions given to class VIII students at SMP Negeri 1 Mandastana totaling 44 people. Furthermore, with the purposive sampling method, 2 students who had different answers were taken to be interviewed as validation of the answers that had been done. The results of this study on question number 1 student A was able to fulfill stages (1), (2), (3), and (4) while student B only fulfilled stages (1), (3), and (4), then on question number 2 student A only fulfilled stages (1), (3) and (4) while student B was only able to fulfill stages (3) and (4).
Effects of Fuel Subsidy Removal and Transportation Fare on School Attendance and Learning Outcome in Mathematics among Secondary School Students in Ilorin, Kwara State Alanamu , Taoheedat; Olarewaju , Adetunji Kamaldeen; Omolola, Abdulrasheed Mariam
Sigma&Mu: Journal of Mathematics, Statistics and Data Science Vol. 3 No. 2 (2025): September
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/sigmamu.v3i2.356

Abstract

Fuel subsidy in Nigeria is one of many consumption subsidy programmes of the government, which attempts to lower the fuel cost by providing direct financial support to oil firms, thereby lowering the fuel price for Nigerians. The removal of fuel subsidy by the Nigeria President has inevitably raised the cost of living across the board and inflicted strain on the wider population. Public schools emerged as the predominant choice among the people of Kwara State, with students constituting the largest segment, followed by teachers and parents/guardians. There are significant challenges and barriers linked to transportation expenses, putting their detrimental effects on mathematics education. This study presents critical insights into the impact of fuel subsidy removal and transportation fare on teaching and learning of mathematics in secondary schools in Ilorin, Kwara State. The study employed rigorous statistical methods, including statistical techniques of descriptive statistics of frequencies and percentages to summarize the demographic information along chi-square test, Pearson correlation and regression analysis, to explore the connection between transportation fare and students' attendance in mathematics classes, as well as the impact of fuel subsidy removal on the teaching and learning of Mathematics, It is obtained from the result that removal of fuel subsidy have negative impact on the teaching and learning of Mathematics, showing the impact on different areas of teaching and learning processes.A significant revelation was the prevalence of walking or trekking as the primary mode of transportation to school for approximately 64% of students. It revealed a robust correlation r-value of 0.312, and the rejection of the null hypothesis. Additionally, regression analysis confirmed the significant influence of transportation costs on students' attendance and punctuality along chi-square test.Furthermore, respondents offered valuable insights into potential solutions. While adjusting school timings garnered disagreement, an overwhelming majority favored educational authorities providing subsidies for transportation. Respondents also expressed enthusiasm for implementing shuttle services and developing online resources for mathematics learning, particularly in mitigating the impact of transportation barriers.Crucially, the study unearthed significant challenges and barriers linked to transportation expenses, affirming their detrimental effects on mathematics education in selected secondary schools in Ilorin. The findings suggest the provision of urgent strategic interventions, including financial support and digital resources, to alleviate transportation-related barriers and enhance mathematics education

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