Research ArticleOpen accessPhrase in the titleEffect of Multicollinearity on Power Rates of the Ordinary Least Squares EstimatorsO.O. Alabi, Kayode Ayinde, T.O. OlatayoInferences on the parameter estimates of Ordinary Least Square (OLS) estimator in regression model when regressors exhibit multicollinearity is a problem in that large standard errors of the regression coefficients which cause low t-statistic value often result into the acceptance of the null hypothesis. This paper, therefore, makes efforts to investigate the effect of multicollinearity on the power rates of … …Journal of Mathematics and Statistics, Vol. 4, Issue 2 · 30 Jun 2008 · 7,880 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAssessing the Trend of Climate Change in the Western NepalPurna Bahadur Khand, Vikash Kumar KC, Ananta Raj Dhungana, Surya Mani DhunganaThis study assesses the change in the climatic variables in the western region of Nepal. Monthly data on minimum temperature, maximum temperature and rainfall for five stations, namely, Chame, Lumle, Khudibazar, Khairenitar and Dumkauli of Manang, Kaski, Lumjung, Tanahu and Nawalparasi districts respectively, obtained from the Department of Hydrology and Meteorology (DHM) of Nepal are considered. Data availability for these … …American Journal of Environmental Sciences, Vol. 16, Issue 6 · 22 Dec 2020 · 7,589 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExploratory Analysis of Rainfall Occurrence in South Sulawesi Region Using Spatial Point ProcessNurtiti Sunusi, Erna Tri Herdiani, Fachrul Nawawi, GiarnoThis paper study the probability of rainfall occurrence in round year in different segment in South Sulawesi region. In this research, rainfall occurrence in round year described by one line which has divided into 12 months. Each one of those months is assumed that the probability of a rainfall follow a homogeneous Poisson distribution. To modeling the rainfall occurrence in … …Journal of Mathematics and Statistics, Vol. 11, Issue 4 · 15 Feb 2016 · 7,450 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPartial Least Squares Regression Based Variables Selection for Water Level PredictionsNoraini Ibrahim, Antoni WibowoFloods are common phenomenon in the state of Kuala Krai, specifically in Kelantan-Malaysia. Every year, floods affecting biodiversity on this region and also causing property loss of this residential area. The residents in Kelantan always suffered from floods since the water overflows to the areas adjoining to the rivers, lakes or dams. Months, average monthly rainfall, temperature, relative humidity and … …American Journal of Applied Sciences, Vol. 10, Issue 4 · 7 Apr 2013 · 6,621 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Modification of the Ridge Type Regression EstimatorsMoawad El-Fallah Abd El-SalamProblem statement: Many regression estimators have been used to remedy multicollinearity problem. The ridge estimator has been the most popular one. However, the obtained estimate is biased. Approach: In this stuyd, we introduce an alternative shrinkage estimator, called modified unbiased ridge (MUR) estimator for coping with multicollinearity problem. This estimator is obtained from Unbiased Ridge Regression (URR) in the same … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 7,638 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Determinants of Agricultural Production and Profitability in Akoko Land, Ondo-State, NigeriaFasoranti Olayiwola OlujenyoThe study considered the determinants of agricultural production and profitability with special reference to maize production in Akoko North East and South West Local Government Areas of Ondo-State. Data collection was through well structured questionnaire administered on 100 respondents selected through random sampling technique. The methods of analysis used were descriptive statistics, gross margin analysis and production function analysis using … …Journal of Social Sciences, Vol. 4, Issue 1 · 31 Mar 2008 · 8,806 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDeterminants of Technical Efficiency on Pineapple FarmingNor Diana Mohd Idris, Chamhuri Siwar, Basri TalibThis study analyzes the pineapple production efficiency of the Integrated Agricultural Development Project (IADP) in Samarahan, Sarawak, Malaysia and also studies its determinants. In the study area, IADP plays an important role in rural development as a poverty alleviation program through agricultural development. Despite the many privileges received by the farmers, especially from the government, they are still less efficient. … …American Journal of Applied Sciences, Vol. 10, Issue 4 · 30 Apr 2013 · 7,980 accessesView PDFCite
Research ArticleOpen accessIn the abstractLivelihood and Resource Interaction of Households in Itu Wetland, NigeriaDaniel Etim Jacob, Imaobong Ufot Nelson, Juliet Oluwaseun DicksonThe study empirically assessed theinteractions between the Itu wetland resource of Akwa Ibom State and thelivelihoods of the communities within it. A two-stagesampling method involving purposive sampling of 30% (6 communities) based onproximity to the resource and random selection of 30 households from the selectedcommunities was utilized. In addition, 118 respondents were sampled using asemi-structured questionnaire. The outcome of the … …American Journal of Environmental Sciences, Vol. 18, Issue 5 · 3 Nov 2022 · 5,841 accessesView PDFCite
Research ArticleOpen accessIn the abstractNexus between CO2 Emission, Energy Consumption and Economic Growth in ASEAN Countries Plus ChinaGhulam Mustafa, Ismail Abd Latif, Said Zamin Shah, Muhammad Khalid BashirThis study mainly contributes to test the Environmental Kuznets Curve (EKC) hypothesis using panel data for the ASEAN (Malaysia, Indonesia, Thailand and Philippines) countries plus China. Empirical focus of the study is to examine the nexus between CO2 emission, energy consumption and economic growth. While using panel data for 1971-2008 and applying panel co-integration techniques, the emergent findings of the … …American Journal of Environmental Sciences, Vol. 12, Issue 4 · 19 Aug 2016 · 7,856 accessesView PDFCite