E jurnal Matematika

83-89

Authors: Made Aristiawan Jiwa Atmaja, I Putu Eka N. Kencana, G.K. Gandhiadi

This paper aimed to determine long-run equilibrium the tourist arrivals, inflation, exchange rate and gross domestic regional product (GDRP) of Bali Province used Johansen’s cointegration test. First examined whether each stationary variables using augmented dickey fuller (ADF) test. ADF test showed GDRP of Bali, tourist arrivals, and exchange rate are not stationary, so it is assumed stationary in first lag or I(1). While inflation is stationary in level or I(0). Johansen’s cointegration test showed the tourist arrivals, inflation, exchange rate and GDRP of Bali are not cointegrated. Notice that there is no long-run equilibrium, it can not be concluded for structural equation models. Keywords: ADF test, tourist arrivals, exchange rate, inflation, gross domestic regional product, Johansen’s cointegration test.

98-103

Authors: Made Sanjiwani, Ketut Jayanegara, I Putu Eka Nila Kencana

The were two aims of this research. First is to get model of the relation between the latent variable quality of service and product quality to customer satisfaction. The second was to determine the influence of service quality on customer satisfaction and the influence of product quality on consumer satisfaction at Burger King Bali. This research implemented Partial Least Square method with 3 second order variables is the service quality, product quality, and customer satisfaction. In this research also used 5 first order variables to explain the variable service quality are tangibles, empathy, reliability, responsiveness, assurance and 6 first order variables to explain the variable quality product are performance, reliability, feature, durability, conformance, and design. Samples used in this research is 100. The results of this research indentify that the service quality and product quality affect customer satisfaction at Burger King. Keywords: Customer Satisfaction, Partial Least Square (PLS), Products Quality, Quality of Service.

110-114

Authors: I Made Budiantara Putra, I Gusti Ayu Made Srinadi, I Wayan Sumarjaya

Regression analysis is a method of data analysis to describe the relationship between response variables and predictor variables. There are two approaches to estimating the regression function. They are parametric and nonparametric approaches. The parametric approach is used when the relationship between the predictor variables and the response variables are known or the shape of the regression curve is known. Meanwhile, the nonparametric approach is used when the form of the relationship between the response and predictor variables is unknown or no information about the form of the regression function. The aim of this study are to determine the best spline nonparametric regression model on data of quality of the product, price, and advertising on purchasing decisions of Yamaha motorcycle with optimal knots point and to compare it with the multiple regression linear based on the coefficient of determination (R2) and mean square error (MSE). Optimal knot points are defined by two point knots. The result of this analysis is that for this data multiple regression linear is better than the spline regression one. Keywords: regression, nonparametric spline, point knot, purchase decision motorcycles Yamaha.

122-126

Authors: Putu Amanda Setiawani, Komang Dharmawan, I Wayan Sumarjaya

The aim of the research is to implement Markov Chain Monte Carlo (MCMC) simulation method to price the futures contract of cocoa commodities. The result shows that MCMC is more flexible than Standard Monte Carlo (SMC) simulation method because MCMC method uses hit-and-run sampler algorithm to generate proposal movements that are subsequently accepted or rejected with a probability that depends on the distribution of the target that we want to be achieved. This research shows that MCMC method is suitable to be used to simulate the model of cocoa commodity price movement. The result of this research is a simulation of future contract prices for the next three months and future contract prices that must be paid at the time the contract expires. Pricing future contract by using MCMC method will produce the cheaper contract price if it compares to Standard Monte Carlo simulation. Keywords:futures contract, Markov Chain Monte Carlo, Standard Monte Carlo, hit-and-run sampler

135-140

Authors: Sang Ayu Putri Indria Rantasari, Ni Luh Putu Suciptawati, Ni Ketut Tari Tastrawati

The purpose of this study is to determine factors that influence consumer’s decisions to choose a brand of mobile phone and to determine the dominant factor influencing consumer’s decision in choosing brand of mobile phone. The method used is factor analysis. Factor analysis is one part of the analysis of several variables that are used to reduce the data, which is a process to summarize a number of independent variables associated with the factors named mapped or grouped into a new variable. The results showed that there are seven factors that influence consumers to choose the brand of mobile phone: the quality factor, brand, features, product durability, shape or model, price, and warranty. While among the seven factors, the quality factor is a dominant factors that affect consumers to choose brand of mobile phone. Keywords: Brand of Mobile Phone, Udayana University Student, Factor Analysis