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ANALYSIS OF THE INFLUENCE OF ELECTRONIC WORD OF MOUTH AND PRODUCT INNOVATION ON CONSUMER PURCHASING DECISIONS AT MARTUBUNG VAPE STORE Try Rahayu; Nuzuliati; Cindy Yolanda; Fatmawati
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol. 6 No. 2 (2026): Algebra : Jurnal Pendidikan Sosial dan Sains
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/bcnytr56

Abstract

The intense competition in the vape industry and the similarity of products between stores require businesses to understand the factors that influence consumer purchasing decisions. In this context, digital information through electronic word of mouth and the level of product innovation are important factors influencing consumer purchasing decisions at Martubung Vape Store. This study aims to determine the partial influence of electronic word of mouth on purchasing decisions, the partial influence of product innovation on purchasing decisions, and the simultaneous influence of electronic word of mouth and product innovation on consumer purchasing decisions at Martubung Vape Store. This study was conducted at Martubung Vape Store, with a total consumer population of 380 in 2024. The sampling technique used 5% of the total population, resulting in a sample size of 79 respondents. The results show that electronic word of mouth has a partial positive and significant effect on consumer purchasing decisions with a significance value of 0.000 < 0.05. Product innovation also has a partial positive and significant effect on consumer purchasing decisions with a significance value of 0.000 < 0.05. Simultaneously, electronic word of mouth and product innovation have a positive and significant effect on purchasing decisions, with a significance value of 0.000 < 0.05. The coefficient of determination (R²) of 0.698 indicates that 69.8% of the variation in consumer purchasing decisions can be explained by electronic word of mouth and product innovation, while the remaining 30.2% is influenced by other factors outside this study.
THE EFFECT OF SERVICE QUALITY AND PROMOTIONAL PRICES ON CUSTOMER SATISFACTION AT PT SWAKARSA JAYA INDONESIA Silverius Laia; Bahdin Nur Tanjung; Irvan Muhrizal; Nuzuliati
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol. 6 No. 2 (2026): Algebra : Jurnal Pendidikan Sosial dan Sains
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/zynyg011

Abstract

This research is motivated by the importance of customer satisfaction in facing increasingly competitive service business competition, especially at PT Swakarsa Jaya Indonesia which still faces various complaints related to service quality and the effectiveness of promotional prices. This study aims to analyze the effect of service quality and promotional prices on customer satisfaction at PT Swakarsa Jaya Indonesia. The research method used is a quantitative descriptive approach with data collection techniques through questionnaires using a Likert scale. The study population amounted to 1,000 consumers with a sample of 91 respondents determined using the Slovin formula. Data analysis was carried out through validity tests, reliability tests, classical assumption tests, multiple linear regression analysis, t-tests, F-tests, and coefficients of determination. The results showed that service quality has a positive and significant effect on customer satisfaction with a calculated t value of 5.810 > t table 1.986 and a significance value of 0.000 < 0.05. Promotional prices also have a positive and significant effect on customer satisfaction with a calculated t value of 2.519 > t table 1.986 and a significance value of 0.000 < 0.05. Simultaneously, service quality and promotional prices significantly influence customer satisfaction. Research findings indicate that improving service quality supported by appropriate promotional pricing strategies can increase customer satisfaction levels. An Adjusted R Square value of 90% indicates that variations in customer satisfaction can be explained by service quality and promotional prices, while the remaining 10% is influenced by other factors outside the study. Thus, service quality and promotional prices are important factors in increasing customer satisfaction at PT Swakarsa Jaya Indonesia.