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All Journal Pelita Eksakta Journal of Mathematics UNP Indonesian Journal of Statistics and Its Applications
Dina Fitria
Departemen Statistika Universitas Negeri Padang
Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Mathematics Physics Other

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Analysis of Teacher’s Competence About Mathematics Materials for National Final Examination Syafriandi Syafriandi; Dina Fitria
Pelita Eksakta Vol 1 No 1 (2018): Pelita Eksakta Vol. 1 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol1-iss1/5

Abstract

Principal component in teaching mathematics for teacher is professional competence. It cover how the teacher understand the material of subject matter itself. Teaching Mathematics in Junior High School, teacher have to understand completely in Numbers, Algebra, Geometry and measurements, and also Statistics and probability. Based on the exam and discussion in workshop, known that math teacher in Pesisir Selatan having problems in teaching Geometry and measurement and also Statistics and probability. The problems are complexity of teaching materials, error in translating competence standard and basic competence into lesson plan, time management and student’s motivation in studying math. Solution that offered to the teacher are translating basic competence into learning process and trick how to teach Geometry and Statistics especially. Teaching geometry by explain all geometry object, i.e. plane and space simultaneously and compare each object directly. Teaching statistics and probability starting by counting process.
Application Of Mathematical Literacy In Mathematics Learning For Elementary School Fadhilah Fitri; Dina Fitria; Fridgo Tasman; Defri Ahmad; Suherman Suherman
Pelita Eksakta Vol 2 No 2 (2019): Pelita Eksakta Vol. 2 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol2-iss2/75

Abstract

Mathematical literacy requires individuals to solve a problem and also apply mathematics in everyday problems, which results in the ability to interpret solutions to those problems. In PISA it is known that Indonesia's mathematics literacy score is among the lowest, as well as in Guguk District Lima Puluh Kota Regency. One way to overcome this is to start introducing literacy to students early on. The introduction of literacy must be instilled in students since they are still in elementary school. Based on this, a training program and workshop was held regarding the application of mathematical literacy in mathematics learning in elementary schools in Guguak District with elementary school mathematics teacher partners who are members of the KKG SD Gugus III Kecamatan Guguak Kabupaten Lima Puluh Kota.
Pengendalian Mutu Alat Skir Katup Otomatis Menggunakan Peta Kendali dengan Metode Bootstrap Yuvani Oksarianti; Dina Fitria
Journal of Mathematics UNP Vol 7, No 3 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.676 KB) | DOI: 10.24036/unpjomath.v7i3.12598

Abstract

Compression leaks occur in valves caused by soot resulting from the combustion process of the combustion engine. To overcome valve leaks, it’s necessary to clean using an innovative tool called valve grinding automatic system. The purpose of this study was to determine the quality of this tool based on the control chart using the bootstrap method. Based on the research results, the control charts X ̅ dan R show that the cleaning process is in a controlled and stable state (in statistical control). The quality of the valve cleaning process using this tool is able of producing cleaning according to standard cleaning specifications.
Survey Training for Collecting Data of Nagari Tanjung Balik Dina Fitria; Nonong Amalita; Syafriandi Syafriandi; Zilrahmi Zilrahmi; Admi Salma; Dodi Vionanda; Yenni Kurniawati
Pelita Eksakta Vol 6 No 1 (2023): Pelita Eksakta Vol. 6 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol6-iss1/202

Abstract

Collecting data is the initial stage of data processing. Such that, it is needed to make sure the data collected is representative. Surveyor is one of its principal components. But, Nagari as a small component of a residence lack of professional surveyor for the work of the survey. The Statistics Department as a producer of statistician gives training to local residents to collect their own data using the right method in Nagari Tanjung Balik
Comparison of K-Means and K-Medoids in Clustering Regency/City in West Sumatra Province Based on Environmental Indicators Silfi Robiati; Dina Fitria; Dodi Vionanda; Dwi Sulistiowati
Indonesian Journal of Statistics and Applications Vol 8 No 2 (2024)
Publisher : Departemen Statistika, IPB University dengan Forum Perguruan Tinggi Statistika (FORSTAT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/ijsa.v8i2p191-201

Abstract

The Environmental Quality Index is an index that describes the condition of environmental management results nationally, and generalises from all regencies/cities and provinces in Indonesia. Although the Environmental Quality Index of West Sumatra Province has increased, there are still regencies/cities in West Sumatra Province have decreasing Environmental Quality Index. Therefore, it is necessary to conduct further analysis, one of which is to form a group of regencies/cities into a group according to their similarities or characteristics. This study aims to compare the K-Means and K-Medoids methods in grouping regencies/cities in West Sumatra Province based on environmental quality indicators in 2023. The data used in this research is secondary data, which is orginally the publication of Central Bureau of Statistics namely Sumatera Barat Dalam Angka in 2024. The research compares the K-Means cluster method and the K-Medoids cluster method. It concludes K-Means better than K-Medoids methods based on DB index with three clusters. First cluster has 12 regencies/cities with a high average air quality index, the second cluster has 6 regencies/cities that have small amounts of waste, and the third cluster has 1 city with a high average water quality index and land quality index, but a large amount of waste.   Keywords: Cluster, Comparison, Environmental, K-Means, K-Medoids
Co-Authors Admi Salma Defri Ahmad Dodi Vionanda Dodi Vionanda Dwi Sulistiowati Fadhilah Fitri Fridgo Tasman Nonong Amalita Silfi Robiati Suherman Suherman Syafriandi Syafriandi Syafriandi Syafriandi Yenni Kurniawati Yuvani Oksarianti Zilrahmi, Zilrahmi