Business Ethics and Service Quality as Determinants of Member Loyalty: Evidence from a Sharia Cooperative in East Java

This study aims to analyze the influence of business ethics and excellent service on the loyalty of members of the Ideal Business Partner Sharia Cooperative (Kopsyah-MUI) East Java Driyorejo Branch. This study uses a quantitative approach with a survey method. A random sample of 50 respondents from a total population of 100 active members was taken using the Slovin formula. Data analysis techniques include descriptive analysis, validity and reliability tests, classical assumption tests, multiple linear regression, t-tests, F tests, and determination coefficients with the help of SPSS software version 16.0. The results of the study show that partially or simultaneously, business ethics and excellent service have a significant effect on member loyalty. The determination coefficient value of 47.9% shows the contribution of both variables to loyalty. This finding reinforces the marketing theory put forward by expert Philip Kotler who states that loyalty is built on the basis of the value of a service or service provided.