scholarly journals The ABC of linear regression analysis: What every author and editor should know

2021 ◽  
Vol 47 ◽  
Author(s):  
Ksenija Bazdaric ◽  
Dina Sverko ◽  
Ivan Salaric ◽  
Anna Martinovic ◽  
Marko Lucijanic

Regression analysis is a widely used statistical technique to build a model from a set of data on two or more variables. Linear regression is based on linear correlation, and assumes that change in one variable is accompanied by a proportional change in another variable. Simple linear regression, or bivariate regression, is used for predicting the value of one variable from another variable (predictor); however, multiple linear regression, which enables us to analyse more than one predictor or variable, is more commonly used. This paper explains both simple and multiple linear regressions illustrated with an example of analysis and also discusses some common errors in presenting the results of regression, including inappropriate titles, causal language, inappropriate conclusions, and misinterpretation.

AKUNTABILITAS ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 113-124
Author(s):  
Indri Ningtyas ◽  
Harun Delamat ◽  
Emylia Yuniartie

This research was aimed to examine the effect of experience, expertise,and professional skepticism toward fraud detection empirical study in BPK RI South Sumatra Representative. The research uses independent variables is experience, expertise and professional skepticism. The dependent variabels are fraud detection. The population of this study is all of the auditors working at BPK RI South Sumatra Respresentative. The samples was conducted by total sampling. For collecting data, the writer uses questionnaires.The Data Analysis uses a multiple linear regressions using the Statistical Packages for Social Science (SPSS) version 21. The statistical method which is used to test the hypothesis is multiple linear regression analysis. The result showed that experience and expertise have a influence on fraud detection. Variable professional skepticism have no influence on fraud detection.


10.32698/0642 ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 120
Author(s):  
Wiwi Delfita ◽  
Neviyarni S. ◽  
Riska Ahmad

Some students perceive lesbian, gay, bisexual, and transgender (LGBT) positively, even though LGBT is a sexual deviation that is not appropriate with values and norms. There are several factors that influence an individual's perception of LGBT, including sexual identity. This study aims at looking at the contribution of sexual identity to student perceptions about LGBT. This research used a quantitative approach with a descriptive method and a simple linear regression analysis. The sample of this research was 385 taken from 15.752 undergraduate students of Universitas Negeri Padang which the sample was drawn by using the Slovin formula and continued with a Proportional Random Sampling technique. The instrument used was the Guttman model's sexual identity scale and the scale of students' perceptions of the LGBT Likert model. After analyzing the data with the descriptive technique and the simple linear regression analysis, the results showed that sexual identity significantly contributed to the students' perceptions of LGBT. This research has implications as a basis for counselors to help students avoid sexual identity mismatches and prevent the emergence of positive perceptions of LGBT.


2019 ◽  
Vol 3 (2) ◽  
pp. 26
Author(s):  
Niken Ayu Wulandari ◽  
Tegoeh Hari Abrianto ◽  
Edi Santoso

This research to analyze and evaluate intellectual capital on financial performance obtained by return on equity, asset turnover and growth in revenue. The population in this study are consumer goods companies listed on the Stock Exchange in 2015-2017. The research sample was received by 21 companies obtained by using purposive sampling technique. The analytical method used is simple linear regression analysis with the SPSS version 20 application and uses the VAICTM method to measure intellectual capital. The results of this study indicate that intellectual capital has a significant effect on financial performance generated by return on equity, but intellectual capital does not have a significant effect on financial performance required by asset turnover and growth in revenue.


2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Wenhui Geng ◽  
Dabo Wang ◽  
Jing Han

Purpose. To explore the disease progression of primary open-angle glaucoma (POAG) in individuals with different degrees of VF defects by analyzing the trends in retinal nerve fiber layer (RNFL) changes at each stage. Methods. A total of 39 patients (77 eyes) were divided into three groups based on the severity of glaucomatous visual field (VF) loss: the first group included patients with mild baseline VF defects (mild group; n = 21 eyes). The second group included patients with moderate VF defects (moderate group; n = 18 eyes). The third group included patients with severe baseline VF defects (severe group; n = 38 eyes). For all patients, slit-lamp biomicroscopy of the anterior and posterior segments and detailed fundus and optic disc inspections were performed, the intraocular pressure (IOP) was measured by Goldman tonometry, best-corrected visual acuity (BCVA) was measured, the RNFL thickness was measured by OCT, and the VF was assessed by the Octopus perimeter. All the groups were followed up postoperatively for 18 months. Results. The mean RNFL thickness was recorded for all the visits. Using simple linear regression analysis, we found that the R2 values of the three groups were 0.988, 0.982, and 0.814, respectively, and the slopes of mean RNFL thickness changes for mild, moderate, and severe baseline VF defects were −0.088, −0.082, and −0.015, respectively. Moreover, we used simple linear regression analysis to explore whether and how the speed of RNFL thinning differs across groups. The R2 values of the three groups were 0.982, 0.978, and 0.805, respectively, and the slopes for mild, moderate, and severe baseline VF defects were 0.089, 0.085, and 0.017, respectively. Conclusion. The rate of RNFL thinning is linear; RNFL thinning is the fastest in individuals with mild baseline VF defects, followed by those with moderate baseline VF defects. In individuals with severe VF defects, changes in the RNFL thickness do not appropriately reflect the progression of the disease. The clinical trial is registered with ChiCTR2000028975.


2021 ◽  
Vol 1 (3) ◽  
pp. 115-119
Author(s):  
Agus Sobar ◽  
Asep Deni ◽  
Riki Riswandi ◽  
Dendi Zainuddin Hamidi ◽  
Indra Permadi

Research related to the effect of product turnover on the performance of companies in the industrial sector is still needed to do research and study in depth. This is needed because the developed sector, especially related to product rotation, has an important role in advancing the sustainability of the company. The research methodology in this research is descriptive quantitative using simple linear regression analysis and using SPSS v 23 and Amos v 23 software as a calculation tool through a measurement model using simple Linear Regression at 87 MSMEs in Sukabumi City. The results of this study indicate a positive effect of product turnover on the performance of Small and Medium Enterprises.


2018 ◽  
Vol 10 (3) ◽  
pp. 226
Author(s):  
Maksimus Bisa

ABSTRACTThis study is descriptive analitik, aims to describe the relationship of perceptions about the physiotherapy profession with the motivation to learn students of the Academy of Physiotherapy UKI. Data collection through questionnaires to students of Physiotherapy Academy UKI level 1, 2, and 3 with a sample of 53 students, then give a score of each statement of questionnaire.The result of correlation analysis shows that p = 0,584> α (0,05) ho is accepted, so there is no significant relationship between the two variables. To measure the closeness and intensity of the relationship between the two variables, test of correlation coefficient and simple linear regression. The result of correlation coefficient test (r) obtained by -0,077, lies below the value of -0.30 (very weak) thus can be said there is no relation between perception about physiotherapy profession with motivation learn student Akfis UKI. Result of linear regression analysis obtained equation: Y = 73,52 + (-0,088) X. This means that every 1 point decrease of perception value will influence motivation value equal to 0,088 times.Keywords: Perception, motivation, physiotherapy profession, and learning achievement. ABSTRAKPenelitian ini bersifat deskriptif analitik, bertujuan untuk mendeskripsikan hubungan persepsi tentang profesi fisioterapi dengan motivasi belajar siswa Akademi Fisioterapi UKI. Pengumpulan data melalui kuesioner kepada siswa Fisioterapi Academy UKI tingkat 1, 2, dan 3 dengan sampel sebanyak 53 siswa, kemudian memberikan skor masing-masing kuesioner pernyataan. Hasil analisis korelasi menunjukkan bahwa p = 0,584> α (0,05) ho diterima, sehingga tidak ada hubungan yang signifikan antara kedua variabel tersebut. Untuk mengukur kedekatan dan intensitas hubungan antara kedua variabel tersebut, uji koefisien korelasi dan regresi linier sederhana. Hasil uji koefisien korelasi (r) diperoleh sebesar -0,077, berada di bawah nilai -0,30 (sangat lemah) sehingga dapat dikatakan tidak ada hubungan antara persepsi tentang profesi fisioterapi dengan motivasi belajar siswa Akfis UKI. Hasil analisis regresi linier diperoleh persamaan: Y = 73,52 + (-0,088) X. Artinya setiap 1 titik penurunan nilai persepsi akan mempengaruhi nilai motivasi sebesar 0,088 kali.Kata kunci: Persepsi, motivasi, profesi fisioterapi, dan prestasi belajar.


2019 ◽  
Vol 5 (3) ◽  
pp. 147-150
Author(s):  
Mukni Mukni

Background: The choice of contraception by family planning acceptors greatly determines the success rate of the family planning program, because not all contraceptives are suitable for someone. This study aims to determine what types of contraceptives chosen by family planning acceptors and whether there is a relationship between the selection of contraceptives there is a relationship with the poverty level in the District / City in South Sumatra in 2015, 2016 and 2017. The source of data obtained from the Provincial BPS South Sumatra. Methodology: This study uses a descriptive approach with a simple linear regression analysis method. Results: The results of the analysis were grouped into two, first long-term contraception method KB IUD, MOW, MOP and implants, both short-term contraceptive methods namely injection KB, pill and condom from 17 regencies / cities in South Sumatra. Conclusion: contraception devices that are mostly chosen by long-term contraceptive methods are implants (10000-35000) or 10-20 times larger than other contraceptives. Short-term contraceptive methods are injections, (7700 - 76000) or 5-7 times greater than other contraceptives. From the simple linear regression analysis it turns out that the relationship of long-term contraceptive selection by acceptors with the poverty level is R² = 0.7382 and the short-term method R² = 0.9223. District / City Governments in South Sumatra should provide alokon (contraceptive devices and drugs) in accordance with the type and amount in the field to be on target


2021 ◽  
Vol 2 (1) ◽  
pp. 6-14
Author(s):  
Zahra Zhafira ◽  
Einde Evana ◽  
Ratna Septiyanti

This study aims to examine the effect of exchange rates on the stock index during the Covid-19 pandemic. This research was conducted using secondary data. The population in this study were all stock indices listed on the Indonesia Stock Exchange with a sample size of 89 and a total stock index of 34. The study period was 4 months, 17 January 2020 to 20 May 2020. The sample data collection of this study used the purposive method. Sampling with world economic conditions and Indonesia which are weakening due to the Covid-19 pandemic and based on the phenomenon that the exchange rate is experiencing a continuous movement even every year the exchange rate depreciates IDR against the US Dollar. One of the causes of the high fluctuation of the rupiah exchange rate against the dollar came from economic factors such as inflation, the interest rate on Bank Indonesia certificates during the Covid-19 pandemic. This study uses a simple linear regression analysis method using SPSS V.26. The results of simple linear regression analysis show that exchange rates have a negative and significant effect on all stock indices listed on the Indonesia Stock Exchange, these results have similarities or differences with the results of research in other emerging market countries.


Biosfer ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 65-69
Author(s):  
Ernawati Ernawati ◽  
Eka Putri Azrai ◽  
Sri Supardi Wibowo

Local wisdom refers to ideas and local knowledge which are wise, full of wisdom, good and virtuous beliefs that made, owned, also carried out by local people in that area. People of Lencoh village are applying local wisdom filled with Javanese culture in order to interact with the environment and use natural resources. This study aims to determine the correlation between perception of local wisdom and conservation attitude of Lencoh village people in Mount Merapi National Park. The study was conducted in Lencoh village, Selo sub-district in January 2016. The method used is the descriptive methods with correlational study. There are 95 respondents from the three hamlets. The data is using questionnaires and interviews. The results showed 56,84% and 43,16% of respondents have a enough and high local wisdom perception, and 8,42% and 91,58% of respondents have a enough and good conservation attitude. Hypothesis is tested using simple linear regression analysis, obtained Y = 47.262 + 0.703X and Pearson Product Moment Correlation test at α = 0.01, obtained rxy = 0.678 indicates a strong correlation between local wisdom perception and conservation attitude of a Lencoh village people. The results of this research prove there is a positive correlation between local wisdom perception and conservation attitude of Lencoh village people on Mount Merapi National Park.


2016 ◽  
Vol 1 (2) ◽  
pp. 191
Author(s):  
Sri Wahyuni ◽  
Nur Maghfirah Aesthetika ◽  
Poppy Febriana

The study, entitled "The Effect of Community Relations conducted by the management of PT Ecco Indonesia toward Tenggulunan community’s Understanding on Industrial Waste Management" aims to determine the effect of community relations conducted by the management of PT Ecco Indonesia toward the Understanding of people living in the vicinity of the company on industrial waste generated. This quantitative study used a sample of 95 respondents. The research data were then analyzed using simple linear regression analysis. The results show that 1) the community relations was done well enough by the management of PT Ecco Indonesia (67.3%), 2) the public's understanding on industrial waste of PT Ecco Indonesia is also quite good (68.8%), 3) there is an effect of community relations of management of PT Ecco Indonesia toward the understanding of people living in Tenggulunan on industrial waste management, 4) the accepted hypothesis shows that that there is a significant relationship between community relations done by the management of PT Ecco Indonesia with public awareness about waste management industry amounted to 81,5%.


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