Population Sample Sampling Method

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CHAPTER III RESEARCH METODOLOGY

A. Research scope

The scope of this research is the field of marketing that focuses on how much influence brand awareness X1, perceived brand quality X2, brand association X3, and brand loyalty X4 as the independent variable on purchase decisions Y. This research conducted in Soekarno-Hatta International Airport on September 2014 until March 2015.

B. Sampling Method

1. Population

Population is the generalization region consisting of objects or subjects that have certain qualities and characteristics defined by the researchers to learn and then drawn conclusions Sugiyono, 2007: 115 in addition to the population could also be defined as a sum total that includes all members of the study Istijanto, 2009: 113. The population in this study is that consumers Garuda Indonesia in Jabodetabek

2. Sample

The sample is part of the number and characteristics possessed by the population. When a large population and researchers may not learn all that there is in the population, for example, because of limited funds, manpower, time, the researcher can use the sample drawn from that population Sugiyono, 2007: 116. According Istijanto 2009: 113 as a part of the sample is drawn from the population. As a result, the sample is 48 always a smaller part of the population. The technique of sampling using the nonprobability sampling technique. This technique does not use the selection procedure but rather an opportunity to rely on personal judgment of researchers Malhotra, 2009: 371. The sampling technique used by the author is the sampling method judgment sampling that samples taken in accordance with the desired characteristics of the population, yet respondents were concerned, anytime and anywhere be found, used as elements of the study sample Hamid, 2007: 32. Sampling was based on the consideration that the respondents ever buy or use the services of Garuda Indonesia. Samples will be selected by the author as a source of data required for this study is the consumer Garuda Indonesia in Soekarno-Hatta International Airport who lived in Jabodetabek. In this study, sampling adapted to the theory of Roscoe in Sugiyono 2009: 129-130, that the sample size is appropriate when the research will perform a multivariate analysis, the number of members of the sample of at least 10 times the number of variables studied. The number of variables in the study was 5, so that the number of samples required by 50 10 x 5 sample of respondents on Garuda Indonesian consumers Jabodetabek.

C. Data Collection Method