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Information: = Number of samples
Zα = Size trust level with α = 0,05 confidence level 95 means Found in table 1,96
= Standard deviation = Standart error that can be tolerated 5 = 0,05
By calculation:
n = From the calculation results, the samples obtained in the
amount of 96.04 to make it easier then rounded to 100 respondents. So in this study will use the 100 respondents to the research
sample.
C. Data Collection Technique
Data processing techniques are ways that can be used by researchers to collect data. In this study, researchers will gather data could be a source of
primary and secondary sources:
1. Primary Data
Data used in this study are primary data. Primary data is data obtained directly from the source first. Data collection is done by:
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a. Interview method Interview method is a method of data collection with a question
and answer directly to the respondents to obtain more accurate data respecting with issues to be discussed.
b.Questionnaire method Questionnaire method is a method to obtain data that is done by
providing a list of questions that will be filled by respondents including questions about the variable service quality, sales
promotion and customer satisfaction toward customer loyalty on Carrefour Lebak Bulus.
Questioner is a formalized set of questions for obtaining information for respondents. It has three specific
objectives Malhotra, 2009: 330 Three specific objectives Malhotra, 2009: 330:
1 The overriding objective is to translate the researcher‘s
information needs into a set of specific questions that respondents are willing and able to answer.
2 A questionnaire should be written to minimize demands imposed on respondents. It should encourage them to
participate in the entire interview, without biasing their responses.
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3 A questionnaire should minimize response error. These errors can arise from respondents who give inaccurate
answers or from researchers incorrectly recording or analyzing their answer.
The questionnaire for this research will be filled out by the respondents and will be include question about the variable service
quality, sales promotion and customer satisfaction toward customer loyalty on Carrefour Lebak Bulus. In this questionnaire there are
two parts, namely: Part I: Concerning the respondent data those are name, gender,
level of education and monthly income. Part II: On the list of questions that will be filled by the respondent.
This study used a Likert scale measuring agreement and disagreement of respondents in responses proposed the statement.
Likert scale is a measurement with five response categories ranging from ―strongly disagree‖ to ―strongly agree‖, which
requires the respondents to indicate a degree of agreement or disagreement with each of a series of statements related to the
stimulus objects Maholtra, 2009:264. The score of questionnaire assessment figures resulted in this
study is according to the Likert scale described in the methods used to measure attitudes, opinions, and perceptions of a person or
group of persons on a social phenomenon Sugiyono, 2013:93.
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A measurement of each variable in this research using Likert scale to measure attitudes, opinion and perceptions of individuals
or groups social phenomena Sugiyono, 2013:94. By using a Likert scale, the measurement variable is an
indicator variable that will be outlined. Using a Likert scale of five 5 levels to express the attitude or the respondent‘s answer as
follows:
Table 3.1 Likert Scale
Strongly agree always very positive very satisfactory
5 Agree often positive satisfying
4 Neutral hesitant sometimes
3 Disagree never negative unsatisfactory
2 Strongly disagree strongly never very
dissatisfy 1
Source: Sugiyono, 2013:133
2. Secondary Data
