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All Journal Techno.Com: Jurnal Teknologi Informasi JMM (Jurnal Masyarakat Mandiri) JTAM (Jurnal Teori dan Aplikasi Matematika) Jurnal Varian Journal of Didactic Mathematics Jurnal Abdimas Bina Bangsa ADMA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Interaktif: Warta Pengabdian Pendidikan (JIWPP) Mahasantri: Jurnal Pendidikan dan Studi Islam Unnes Journal of Mathematics Jurnal Riset Teknologi dan Inovasi Pedidikan (JARTIKA)
Ahmad Ahmad
Universitas Bumigora
Religion Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Mathematics Nursing Social Sciences Other

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Journal : Jurnal Varian

 1 
PENGARUH EFEKTIVITAS DISTRAKTOR PADA ITEM TES PILIHAN GANDA TERHADAP PRESTASI BELAJAR MATEMATIKA SISWA Ahmad Ahmad; Nipaah Nipaah
Jurnal Varian Vol 1 No 1 (2017)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v1i1.52

Abstract

Adapun penelitian ini bertujuan untuk mengetahui ada atau tidaknya pengaruh efektivitas distraktor terhadap prestasi belajar siswa kelas VII di MTs.N Model Kuripan Tahun Ajaran 2010/2011. Pendekatan penelitian yang digunakan adalah penelitian kuantitatif dengan bentuk penelitian ex post facto, dimana data yang dianalisis adalah data prestasi siwa yang sudah ada dan di dokumentasikan. Populasi pada penelitian ini adalah siswa kelas VII MTs.N Kuripan Semester II (Genap) yang terdiri dari lima kelas yaitu VIIA,VIIB,VIIC,VIID, dan VIIE. Dan pada penelitian ini peneliti menggunakan populasi penelitian yaitu semua kelas VII yang berjumlah 127 siswa. Berdasarkan hasil analisis data yang dilakukan dengan persamaan regresi sederhana diperoleh nilai F hitung lebih besar dari F tabel sehingga dapat di simpulkan ada pengaruh negatif efektivitas ditraktor terhadap prestasi belajar siswa kelas VII di MTs.N Model Kuripan Tahun Ajaran 2010/2011.
EFEKTIVITAS PENGGUNAAN ALAT PERAGA TERHADAP PENINGKATAN PRESTASI BELAJAR SISWA PADA MATERI BANGUN RUANG SISI DATAR (KUBUS DAN BALOK) Ahmad Ahmad; Ahmad Sehabuddin
Jurnal Varian Vol 1 No 2 (2018)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v1i2.74

Abstract

A props is a tool when learning. In the case on the subject of plane geometry, props are urgently needed to visualize the material taught by the teacher, so that students can see firsthand the real forms of flat-side building. Learning by using props can focus students and can increase student’s activity and motivation. The purpose of this study is to determine the effectiveness of the use of props in improving student achievement on the subject of plane geometry in class V MI Nurul Yaqin Kelanjur. This research is a quasi-experimental research where the researcher only control the variables in the class. Research method used in this research is quantitative method by using t-test formula. The research population is class V MI Nurul Yakin Kelanjur which amounted to 12 people by given preetest and posttest.Based on the results of hypothesis test data analysis with t-test, it’s found that there are significant differences between student achievement before and after using props, this can be seen from tcount = 3.782 > ttable = 1.717, so H0 rejected. To find out whether the learning by using props effectively or not, seen from the mastery of individual and classical mastery. Students' mathematics learning achievement after using props has been found that many students are 91.67% complete. Because the complete student achieves 85%, the student is said to be thoroughly classical. Based on research result, it can be concluded that learning by using props on the subject of plane geometry effective to do.
A Analisis Portofolio Investasi dengan Metode Mean Varian Dua Konstrain Gilang Primajati; Ahmad Ahmad
Jurnal Varian Vol 2 No 1 (2018)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v2i1.319

Abstract

Dalam pembentukan portofolio efisien, banyak metode yang dapat digunakan. Tentu dengan berbagai asumsi dan keungulannya tersendiri. Pada prosesnya, asumsi investor yang wajar cenderung menghindari risiko (risk averse). Investor yang risk averse adalah investor yang jika dihadapkan pada dua investasi dengan expected return yang sama, maka ia akan memilih investasi dengan tingkat risiko yang lebih rendah. Jika seorang investor memiliki beberapa pilihan portofolio yang efisien, maka portofolio yang paling optimal-lah yang akan dipilihnya. Portofolio optimal dengan kriteria mean-variance efficient portfolio, investor hanya berinvestasi pada aset-aset berisiko saja. Investor tidak memasukkan aset bebas risiko (risk free asset) dalam portofolionya. Mean-variance efficient portfolio didefinisikan sebagai portofolio yang memiliki variansi yang minimum di antara keseluruhan kemungkinan portofolio yang dapat dibentuk, pada tingkat mean expected return yang sama. Metode mean varian dua konstrain dapat dijadikan dasar dalam penentuan bobot portofolio yang optimal yaitu dengan meminimalkan resiko return portofolio dengan dua kendala. Pada artikel ini kendala yang dimaksud disimbolkan dengan lamda dan beta. Dengan metode dua konstrain ini hasil yang diperoleh lebih detail sehingga mampu menggambarkan hasil analisa yang lebih tajam bagi seorang investor.
Analisis Portofolio Investasi dengan Metode Multi Objektif Gilang Primajati; Ahmad Zuli Amrullah; Ahmad ahmad
Jurnal Varian Vol 3 No 1 (2019)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v3i1.476

Abstract

In the formation of an efficient portfolio, many methods can be used. Of course with its own assumptions and advantages. In the process, reasonable investor assumptions tend to be risk averse. Investors who are risk averse are investors who, when faced with two investments with the same expected return, will choose an investment with a lower risk level. If an investor has several efficient portfolio choices, then the most optimal portfolio will be chosen. Optimal portfolio with mean-variance efficient portfolio criteria, investors only invest in risky assets. Investors do not include risk free assets in their portfolios. Mean-variance efficient portfolio is defined as a portfolio that has a minimum variance among all possible portfolio that can be formed, at the mean level of the same expected return. The mean variant method of the two constraints can be used as a basis in determining the optimal portfolio weight by minimizing the risk of portfolio return with two constraints. In this article the problem referred to is symbolized by lamda and beta. With this two-constraint method, the results obtained are more detailed so that they can describe the results of a sharper analysis for an investor.
Amount of Poverty as Policy Basis: A Forecasting Using The Holt Method Syaharuddin Syaharuddin; Ahmad Ahmad; Vera Mandailina; Dewi Pramita; Mahsup Mahsup; Abdillah Abdillah
Jurnal Varian Vol 4 No 1 (2020)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v4i1.849

Abstract

This research aims to predict the growth of the number of poor people in every district and city in NTB Province of Indonesia for the next 10 years by using Holt exponential smoothing method. This type of research is quantitative research with input data used over the last 19 years with a measure of the goodness of models namely MSE, MAD, and MAPE. Based on the optimization results obtained the smallest parameter at α of 0.9 and β of 0.1, an average value MSE of 278005053.7, MAD of 9992.28222, and MAPE of 8.9374 Optimization results also provide information that the increase in the growth of the average poor population of 70206.6604 Certainly this result can be used as a guideline by the government in determining steps and responding to rapid response strategies in dealing with this poverty problem.
Co-Authors Abdillah Abdillah Ahmad Zuli Amrullah Andika Ellena Saufika Hakim Maharani Dewi Pramita Farah Heniati Santosa Gilang Primajati Gilang Primajati Gilang Primajati Habib Ratu Perwira Negara Habibi Ratu Perwira Negara Hairani Hairani Halimatuzzahrah Halimatuzzahrah Heri Fadli I Komang Wira Aditya I Nyoman Darmawan Setiaji Kiki Riska Ayu Kurniawati, Kiki Riska Ayu Kurniadin Abd Latif Lalu Erwin Jannata Arhaditya Mahsup Mahsup Miftahul Jannah Muhammad Arfa Muhammad Zulfikri Nipaah Nipaah Pahrul Irfan Parihin Parihin Parihin Parihin Parihin Parihin Ria Rismayati Rifqi Hammad Sahrizal Fahlawi Samsul Bahri Samsul Bahri Sehabuddin, Ahmad Siti Soraya Suriyati Suriyati Syaharuddin Syaharuddin Syahrir, Moch. Vera Mandailina