Simple Linear Correlation Analysis Research Articles

The Principal’s Leadership and its Effect on the Teacher’s Teaching Performance

The purpose of this study was to analyze the relationship between the principal's leadership and the teaching performance of public high school teachers in Manna City district, Bengkulu. This research includes a quantitative approach with a correlational design. Research data was collected using a questionnaire in the form of Google Form and WhatsApp media. The data analysis technique used to test the hypothesis was a simple linear correlation analysis and multiple correlation. Based on the research results, the better the leadership of the principal, the teaching performance of the teacher will also increase.

The Principal’s Leadership and its Effect on the Teacher’s Teaching Performance

The purpose of this study was to analyze the relationship between the principal's leadership and the teaching performance of public high school teachers in Manna City district, Bengkulu. This research includes a quantitative approach with a correlational design. Research data was collected using a questionnaire in the form of Google Form and WhatsApp media. The data analysis technique used to test the hypothesis was a simple linear correlation analysis and multiple correlation. Based on the research results, the better the leadership of the principal, the teaching performance of the teacher will also increase.

Breast Self-Examination Among Women of Reproductive Age in Metro Vigan, Ilocos Sur, Philippines

The study dealt with the extent of breast self-examination among women of reproductive age in Metro Vigan for the Calendar Year 2016. It determined the knowledge level of the respondents on breast cancer and breast self-examination. Lastly, it determined the link between their knowledge level on breast cancer and breast self-examination and the extent of breast self-examination with the respondents’ profile. The study used the descriptive-correlational method. Twenty-five women in every municipality in Metro Vigan comprised the 125 respondents. They were chosen through purposive sampling. The information is collected through the use of a modified questionnaire checklist from the study of Corpuz (2013). Data were treated through frequency and percentage, mean, and simple linear correlation analysis. The majority of the respondents were married, college graduates, non-professionals, and acquired facts on breast cancer and breast self-examination from media, a great percentage were 30-34 years old, and most had no family history of cancer. Their level of knowledge on breast cancer was “Average.” The knowledge on breast self-examination was “High.” The extent of breast self-examination was “Fair.” There is a significant relationship between the level of knowledge on breast cancer and breast self-examination and the extent of breast self-examination with the educational attainment and occupation. Keywords : level of knowledge, extent, breast, and breast cancer

Plant diversity patterns along environmental gradients in Nanda Devi Biosphere Reserve, West Himalaya

Mid to high-altitude vegetation in part of west Himalaya, India has been investigated and analyzed for assessing species distribution in relation to environmental variables. The buffer zone site of Nanda Devi Biosphere Reserve (NDBR) in Pindari–Sunderdhunga–Kafni (PSK) area (30 forest stands in 11 forest communities) of Kumaun and Lata–Tolma–Phagti (LTP) area (30 forest stands in 8 forest communities) of Garhwal region having 11 forest communities along different elevation gradients was identified for detailed surveys. Species composition showed a total of 451, distributed in NDBR along Pindari–Sunderdhunga–Kafni site and Lata–Tolma–Phagti transects. Among communities, Quercus semecarpifolia and Mixed Abies pindrow-Quercus spp. communities in Pindari–Sunderdhunga–Kafni site with 23 species each and Pinus wallichiana community in Lata–Tolma–Phagti site with 18 species showed highest species composition. The interrelationship between environmental variables and species distribution was analysed using Simple Linear Correlation analysis and Canonical Correspondence Analysis (CCA). Simple Linear Correlation and CCA indicated compositional differences in forest types that perhaps was caused by differences in species richness and forest composition. In both the sites, among all the environmental variables, elevation, slope and organic carbon were found to be the most controlling factor for species distribution. Different forest structural components like species richness, total basal area, canopy density was found to be varying greatly with environmental factors and human disturbance, however, more datasets of vegetation dynamics and responses are required to further strengthen this premise.

Age-specific comparison of some morphological parameters of the proximal phalanges of the hand in male children and adolescents from Tajikistan and Western India

The aim of the study was (a) to establish ethnicity-specific differences in such morphological parameters of the proximal phalanges (PP) as the bone length and the width of diaphysis in male children and adolescents from Tajikistan and Western India and (b) to develop regression equations for determining their age based on the size of the PP. Materials and methods. Three hundred and sixty-two X-ray images of the right hand of male subjects were examined. All subjects originated from Tajikistan and Mumbai, India, and aged from 6 to 17 years. The relationship between the subjects’ age and the length of the PP (LPP) and the width of the diaphysis of the PP (WPP) was investigated using a simple linear regression and correlation analysis. The LPP and WPP dependence on age was determined using one-way ANOVA and the Kruskal–Wallis test followed by post-hoc analysis by age groups. Results. LPP and WPP of the subjects from Tajikistan and India correlated with age, with the correlation coefficient exceeding 0.5. In both ethnic groups, the correlation coefficients for LPP vs. age was greater than 0.8. The correlation coefficient for WPP vs age ranged from 0.68 to 0.77 in Tajiks and from 0.58 to 0.69 in Indians. Simple linear regression models were developed to predict the age from LPP ( R 2 > 0.6), except for LPP 5 for Tajiks. The LPP 5 values in Tajiks and the WPP values in both ethnic groups showed weak R 2 , which ranged from 0.35 to 0.53. Eleven significant differences were identified between the ethnic groups of the same age with respect to LPP and WPP. Conclusion . PP length was a better age predictor than the diaphysis width. The most reliable predictor for both ethnic groups was LPP 2. The PP parameters did not change uniformly over time. The PP demonstrated especially intensive growth between 12 and 15 years. The most significant differences in LPP and WPP between two ethnic groups were found for the ages of 8 and 15–16 years, with LPP and WPP in Tajiks exceeding those in Indians.

Cooperativas de crédito catarinenses: relação entre tamanho e eficiência financeira-operacional

O objetivo deste trabalho é mensurar a relação entre tamanho e eficiência financeira-operacional das cooperativas de crédito de Santa Catarina. A literatura apresenta resultados distintos de estudos que buscaram mensurar a influência do tamanho das cooperativas de crédito na sua eficiência. O estudo quantitativo foi estruturado por meio da análise envoltória de dados, da regressão linear simples e da análise de correlação. Os achados da pesquisa identificaram que não há influência do tamanho na eficiência financeira-operacional. Nem mesmo pode-se considerar que exista associação entre a eficiência e o tamanho das cooperativas de crédito e que tais resultados estão em acordo com outros estudos realizados no Brasil. Conclui-se que as práticas de gestão das cooperativas de crédito, por estarem voltadas a atender as necessidades de crédito de seus associados, pode ser um dos fatores que influenciaram os resultados. Outro fator que pode influenciar é a diferença no acesso aos recursos, para operar nas diferentes regiões geográficas.

PENINGKATAN KEPUASAN KERJA GURU DENGAN CARA PENGUATAN KEPEMIMPINAN TRANSFORMASIONAL DAN BUDAYA ORGANISASI

IMPROVING TEACHER JOB SATISFACTION BY STRENGTHENING TRANSFORMATIONAL LEADERSHIP AND ORGANIZATIONAL CULTUREThis study is intended to empirically determining teacher job satisfaction by strengthening transformational leadership and organizational culture of honorary teachers of private vocational schools at Cibungbulang District. The number of research sample was 158 teachers taken using proportional random sampling techniques. The utilizing method was the correlational method. Hypothesis testing was carried out using parametric statistical analysis in the form of simple and multiple linear regression analysis, simple and multiple correlation analysis with significance levels α = 0.01 and α = 0.05. This research resulted in four conclusions. Firstly, there was a positive and significant relationship between transformational leadership and teacher job satisfaction where the correlation coefficient ry1 = 0.588, the coefficient of determination Ry12 = 0.3461. Secondly, there was a positive and significant relationship between organizational culture and teacher job satisfaction where the correlation coefficient ry2 = 0.626, the coefficient of determination Ry22 = 0.3914. Thirdly, there was a positive and significant relationship between both transformational leadership and organizational culture with teacher job satisfaction where the correlation coefficient ry.12 = 0.71 and the coefficient of determination Ry.122 = 0.504. Fourthly, the job satisfaction could be improved by strengthening transformational leadership and organizational culture, both separately or altogether. It can be concluded that teacher job satisfaction can be improved by strengthening transformational leadership and organizational culture.

PENINGKATAN KOMITMEN TERHADAP PROFESI MELALUI PENGUATAN PEMBERDAYAAN DAN EFIKASI DIRI GURU SMP SWASTA

IMPROVEMENT OF COMMITMENT TO PROFESSION THROUGH STRENGTHENING EMPOWERMENT AND SELF-EFFICATION OF PRIVATE SMP TEACHERSThis study is intended to determine the increase of organizational commitment by studying its correlation with Empowerment and Self-Efficacy of Private Junior High School Teachers located in Tapos District, Depok. The number of research samples were 106 teachers which were taken by using proportional random sampling techniques. The method used was the correlational method. Hypothesis testing was carried out using parametric statistical analysis in the form of simple and multiple linear regression analysis, simple and multiple correlation analysis and partial analysis where the significance levels α = 0.01 and α = 0.05. This study came up with three conclusions. Firstly, there was a moderate positive and significant relationship between the variables of empowerment and organizational commitment with a correlation coefficient ry1 = 0.63, a coefficient of determination Ry12 = 0.4026. Secondly, there was a high positive and significant relationship between the variable of self-efficacy and organizational commitment with a correlation coefficient ry2 = 0.81, and the coefficient of determination Ry22 = 0.6580. Thirdly, there was a high positive and significant relationship between the empowerment variable (X1) and self-efficacy (X2) together with organizational commitment with a correlation coefficient ry.12 = 0.834 and a coefficient of determination Ry.122 = 0.696. It couldn be concluded that the organizational commitment variable might be increased by strengthening the empowerment and self-efficacy variables.

Quantifying the seasonal cooling capacity of ‘green infrastructure types’ (GITs): An approach to assess and mitigate surface urban heat island in Sydney, Australia

Green infrastructure (GI) can help moderate urban overheating and mitigate surface urban heat islands (SUHIs) by providing protection from solar radiation, cooling surfaces through evapotranspiration, and modifying heat exchanges through advection. However, more research is needed to determine the optimum amounts, compositions and configurations of GI necessary to provide maximum thermal cooling and mitigate urban warming more effectively. In this study, a recently developed ‘green infrastructure typology’ (GIT) scheme is applied in Sydney, Australia to analyse the interplay and cumulative cooling effects of natural and artificial elements in summer and winter by considering their morphological and spatial characteristics. Thermal-vegetation index (TVX), simple linear regression and correlation analyses were performed to identify factors that are more influential on the cooling effects of GI. After, a hierarchical cluster analysis was performed to group types with similar cooling capacity, representing potential mitigation strategies that could be implemented at local scale. Results presented here demonstrate that the cooling effect of different types of GI on surface temperatures mostly depend on the abundance and composition of natural and man-made features. As thermal performance of GI depends on the interplay between both, this study offers a more holistic and integrated approach to assess and counter urban overheating. Key insights derived from the analysis are presented to provide a better understanding on which aspects of GI and urban form should be considered to mitigate SUHIs more effectively in neighbourhoods urban precincts and streets.

Análise dos investimentos do PAC em hidrovias na Amazônia brasileira e sua relação com o escoamento da produção

A partir de umapesquisa descritiva quantitativa e da análise de correlação linear simples, buscaseanalisar os investimentos financeiros do PAC na região Amazônica referenteà infraestrutura logística das hidrovias (terminais, corredores e hidrovias). Especificamente,identifica-se o estágio das obras, além das áreas da Amazônia ondeos investimentos estão mais focados e, por fim, a relação entre o escoamento daprodução com o investimento. Dentre os principais resultados encontrados napesquisa, pode-se perceber uma moderada relação dos investimentos do PACem hidrovias com o escoamento da produção via navegação por interior.

7.Sınıf Öğrencilerinin Uzamsal Yetenekleri ile Zihnin Geometrik Alışkanlıkları Arasındaki İlişki

The aim of this study is to determine the relationship between the geometric habits of mind and spatial relations which is one of the spatial visualization abilities of 7th grade students. The sample of the research designed in the relational model is composed of 98 students randomly selected among 7th grade students studying in a state secondary school. “Spatial Relations Test” and “Fostering Geometric Thinking Test” are used as data collection tool in the research. In order to analysis the data, simple linear correlation analysis and simple regression analysis were performed in SPSS 20.00 statistical program. As a result of the data analysis, it was found that the average points for geometric habits of mind and the points attained out of the spatial relations test were on an average level. A positive low-level relationship was reached between the geometric habits of mind and the spatial relations. The findings that there is a positively significant correlation between the spatial relations and geometric habits of mind, and mathematics achievement; and that the spatial relations predict the geometric habits of mind at a certain level were obtained. Suggestions were made in line with the findings

Bulb Quality and Storability of Onion (Allium cepa L.) as Affected by Varieties and Intra-Row Spacing in Antsokia Gemza, Ethiopia

This experiment was conducted in Antsokia Gemza district, Ethiopia in 2017/18 to evaluate the effect of intra-row spacing on bulb quality and storability of onion varieties. A 4×4 factorial experiment with four different varieties (Adama Red, Bombay Red, Melkam and Shendi) and four levels of intra-row spacing (5.00, 7.50, 10.00 and 12.50 cm) was laid on randomized complete block design with three replications. Data were collected on bulb quality attributes and storability and subjected to Analysis of Variance (ANOVA) using statistical analysis system (SAS) computer software 9.1. The mean separation test was done by list significant difference (LSD) test at 5% probability level. Simple linear correlation analyses between and among the different parameters were made using Pearson Correlation Coefficient. Accordingly, most of the parameters were significantly affected by intra-row spacing and variety. Variety Melkam exhibited the highest bulb diameter, bulb length, bulb dry matter content and bulb fresh weight. Melkam and Adama Red were with the lowest weight loss in storage while Bombay Red and Shendi scored the highest weight loss in storage. Most of the bulb quality parameters were significantly highest at the widest intra-row spacing of 10.00 and 12.50 cm. However, there was no significant variation between 7.50 and 10.00 cm intra-row spacing on average bulb weight which is considered as the most important bulb quality parameter for the producers from the market point of view. Weight loss was higher at the widest intra-row spacing for all varieties. Based on the findings of this study, it can be concluded that the bulb quality and storability of onion in Antsokia Gemza district can be optimized through cultivating variety Melkam at intra-row spacing of 7.5 cm.

Numeracy Achievement of Learners: An Aftermath of Mother Tongue- Based Multilingual Education

Although there are obvious advantages in having a multilingual education system, it remains a challenge to Mathematics educators. This study determined the numeracy achievement of Grade IV pupils as an aftermath of the use of Mother Tongue as the Language 1 and English as the Language 3 in San Juan District, Schools Division of Ilocos Sur during the School Year 2017-2018. The pupils’ numeracy achievement was measured by means of an achievement test using the Mother Tongue and English. The descriptive method of research was utilized in this study with a questionnaire and two sets of achievement tests as main tools for data gathering. The respondents involved 223 pupils from the selected schools in San Juan District, Schools Division of Ilocos Sur. Ethical principles and considerations were strictly observed. The gathered data were analyzed using frequency and percentage, mean and simple linear correlation analysis. Based on the results, it was found out that there is no significant relationship between the level of usage of Mother Tongue and English on the Numeracy Achievement of Learners. Therefore, the level of pupils’ performance may be improved by encouraging learners to be involved more in Mathematics-related activities to further enhance their knowledge and improve their performance like the following: think-pair share, quick-writes, anticipatory charts, peer-teaching, manipulative and gamification

HUBUNGAN KEPEMIMPINAN INSTRUKSIONAL KEPALA SEKOLAH DAN EFIKASI DIRI DENGAN KINERJA MENGAJAR GURU

This study aims to reveal the relationship of principal instructional leadership and self efficacy with the performance of teaching teachers of public junior high school in Pinang Raya District. The research method that will be used in the preparation of this thesis is survey research with quantitative approach. The survey research is to explain the casual relationship and hypothesis testers. Collection data using questionnaires, which have completed scores on each item. While the data analysis techniques used to test the hypothesis is a simple linear correlation analysis technique and multiple correlation. Based on the results of the study, the conclusions can be drawn from the results of this study is the teacher's teaching performance can be improved by improving principal instructional leadership performance and self efficacy.

Fen Bilgisi Öğretmen Adaylarının Mesleki Benlik Saygıları İle Yaşam Doyumlarının İncelenmesi

Bu araştırmada, fen bilgisi öğretmen adaylarının mesleki benlik saygıları ile yaşam doyumlarının çeşitli değişkenler açısından incelenmesi ve aralarındaki ilişki düzeylerinin belirlenmesi amaçlanmıştır. Araştırma verileri, Ordu Üniversitesi Fen Bilgisi Öğretmenliği Bölümünde öğrenim gören 66 öğretmen adayından elde edilmiştir. İlişkisel tarama yönteminin kullanıldığı araştırmada veri toplama aracı olarak; “Mesleki Benlik Saygısı Ölçeği”, “Yaşam Doyum Ölçeği” ile araştırmacı tarafından oluşturulan “Kişisel Bilgi Formu” kullanılmıştır. Araştırmada fen bilgisi öğretmen adaylarının “Mesleki Benlik Saygısı” ile “Yaşam Doyumu” değişkenleri arasındaki ilişki düzeyi, basit doğrusal regresyon analizi ve pearson korelasyon analiziyle incelenmiştir. Araştırma sonuçları değerlendirildiğinde mesleki benlik saygısı ile yaşam doyumu arasında pozitif yönde istatistiksel olarak anlamlı bir ilişki bulunmuştur.

Vitamin 25(OH) D and cognitive function in parkinson’s disease

The role of vitamin D is gaining attention in neurodegenerative diseases, as low serum concentrations have been consistently found in both Alzheimer’s and Parkinson’s disease (PD). This study aims to correlate 25(OH) D plasma levels with global cognitive function and severity of motor function in PD. 350 patients with idiopathic PD (66% male, mean age 70.5 yr (range 60-87), mean disease duration 9.9±5.7 yr) were consecutively recruited at a tertiary referral clinic during an 8-month period. We correlated plasma 25(OH) D levels with demographic and clinical data, including PD severity (Hoehn & Yahr stage) and global cognitive function (Mini Mental State Examination, MMSE) . In addition, Plasma 25(OH) D levels were correlated with sun exposure (hours/day). Overall, PD patients showed 25(OH) D deficiency (mean level 17.1 ± 8.34 ng/ml). Using simple linear correlation analysis, we found a direct association between 25(OH) D and MMSE score (p=0.03) and an inverse association between 25(OH) D and age (p<0.01) and the Hoehn & Yahr stage (p=0.01). Plasma 25(OH) D levels positively correlated with solar exposure (p = 0.04). In a large PD cohort, low 25(OH) D levels correlated with older age and with worse global cognitive function and disease severity. Daily time of sun exposure greatly increased 25(OH) D levels. We strongly recommend screening PD patients for 25(OH) D plasma levels and -in case of deficiency- ensuring oral supplementation to reduce the risk of cognitive dysfunction and motor disability.

The comparison of the impact of arterial stiffness and central pressure on left ventricular geometry and diastolic function

BackgroundThis study was performed to compare the associations of brachial-ankle pulse wave velocity (baPWV) and central blood pressure (CBP) measurements with left ventricular (LV) geometry and diastolic function.MethodsA total of 77 subjects (64.5 ± 10.8 years, 67.5% females) without documented cardiovascular disease were prospectively recruited. All subjects underwent transthoracic echocardiography, baPWV and noninvasive measurement of CBP on the same day.ResultsIn simple linear correlation analyses, neither baPWV nor CBP was associated with LV mass index or relative wall thickness (P > 0.05 for each). Although baPWV significantly correlated with septal e´ velocity in simple linear correlation analyses (r = 0.258, P = 0.025), the significance was lost after controlling for potential confounder (P = 0.881). In simple linear correlation analyses, central systolic blood pressure (CSBP) and central pulse pressure (CPP) significantly correlated with both septal e´ velocity or E/e´ (P < 0.05 for each); however, neither central diastolic nor mean arterial pressures was associated with both septal e´ velocity and E/e´ (P > 0.05 for each). After controlling for confounders, including age, sex and body mass index, CSBP correlated with septal e´ velocity (β = − 0.258, P = 0.025), but not with E/e´ (P = 0.074). CPP correlated with both septal e´ velocity (β = − 0.300, P = 0.014) and E/e´ (β = 0.428, P = 0.002) in the same multivariable model.ConclusionsIn subjects without documented cardiovascular disease, CSBP and CPP may be more strongly associated with LV diastolic function than baPWV. Further studies with a larger sample size are needed to confirm our results.

Analysis of the Production Components in the Soybean Crop in the Last Two Decades in the State of Parana and Brazil

Introduction: Soy is an agricultural crop that has great economic importance. The analysis considering the cultivated area, the production and the yield of grains contributes to research and transfer of technology to the producers.&#x0D; Aims: To adjust the mathematical model using simple linear regression analysis and correlation between the variables of planted area, production and productivity, in the state of Paraná and Brazil, in the last two decades.&#x0D; Study Design: Data collection and research of information on the cultivation of soybeans in the state of Paraná and in Brazil on official websites&#x0D; Place and Duration of Study: State University of Western Paraná, Post-Graduation in Agronomy, between July 2018 and December 2018.&#x0D; Methodology: Data were obtained from the Portal of the Brazilian Institute of Geography and Statistics between 1997 and 2017. Simple linear regression analysis and Pearson correlation analysis were used.&#x0D; Results: By analyzing the results, it is possible to observe significant increases in soybean production in both Paraná and Brazil over this 20-year period. Paraná achieved a 205% increase in planted area, 290% in production and 141% in average yield.&#x0D; Conclusion: The simple linear regression and correlation analysis showed an adjustment between the cultivated area, the production and the average productivity in the soybean crop in the period from 1997 to 2017.

Modeling the influence of inflation on the level of non-performing loans in Cyprus commercial banks

The object of this research is the commercial banks of Cyprus. The paper examines the impact of macroeconomic changes, in particular inflation, on the level of non-performing loans in commercial banks. The macroeconomic indicators studied include inflation rates. The research methodology is based on theoretical and methodological analysis of the scientific literature, statistical and econometric methods, as well as observation, comparative method, description, measurement, analysis and modeling. To develop a statistical model that represents the relationship between inflation rates and non-performing loans in Cyprus, the author uses simple linear correlation and data analysis methods such as the correlation coefficient and the determination coefficient.The research results show that the resulting econometric model is acceptable, since the determination coefficient is equal to 0.504, and inflation indicators are decisive for the level of non-performing loans. This is due to the fact that the correlation coefficient between these variables is –0.710, and according to the Chaddock scale the coupling magnitude is high. In addition, the correlation coefficient of inflation and non-performing loans in Cyprus is statistically significant, since the value of the correlation coefficient is beyond the limits of critical values of |0.468|. Also from the research results it is found that in the case of Cyprus, inflation rates are negatively associated with non-performing loans, since the resulting correlation coefficient is a negative number. The resulting model is not used to compile a short-term forecast, due to the insufficient value of the determination coefficient (50.4 %). In general, it is proposed that policy makers devote considerable attention to the determinants of non-performing loans, as the deteriorating conditions of non-performing loans will affect not only banking institutions, but also the general state of the financial system of Cyprus. The practical significance of the research cited in the work lies in the fact that the research results can be used as reference material for business, government and education.

İnternet Bağımlılık Düzeyinin Akademik Ertelemeye Etkisi: Sağlık Yönetimi Öğrencileri Üzerine Bir Araştırma

Abstract: This study aims to measure the effect of internet addiction levels of university students studying in health management department on academic procrastination. The research data include the 1st, 2nd, 3rd, and 4th year students of Sivas Cumhuriyet University in 2017 - 2018 academic year. The research is a cross-sectional and descriptive type and it consists of 222 students, 49 of whom are 4th grade, 55 are grade 3, 55 are 2nd grade and 63 are 1st grade. The data were obtained through the demographic information form developed by the researcher, the Academic Procrastination Scale (ESI) and the Internet Addiction Scale (PPI). The results were verified and compared by means of classification tables, t-test, one-way ANOVA, simple linear regression analysis and correlation analysis methods. 51.4% of the students in the study were determined as not internet addicts, 45.5% were as risky users and 3.2% were as internet addicts. It is determined that the students' academic procrastination perceptions of gender is (t = 2,075; p <0,05), their general academic grade average (GANO) is (F = 7,089; p <0,05) and their taking lessons from the lower classes is (t = -2,556; p<0,05), and they are statistically significant at 95% confidence level. It was determined that there was a meaningful difference between the students' perceptions of internet addiction and gender (t = -4,832; p <0,05), age groups (F = 2,688; p <0,05) and GANO (F = 4,678; p <0,05) at 95% confidence level statistically. According to these results, Internet addiction has a significant effect on academic procrastination.