Abstract:
The objectives of this independent study are as followed: 1. To study factors in the marketing mix that affect the decision making of customers in purchasing construction materials from Thanapaiboonkarwatsadu store; and 2. To comparatively study the relationship of marketing
mix factors categorized by data collected from personnel department, in order to create guidelines for service improvement for Thanapaiboonkarwatsadu. The data was collected from 400 Thanapaiboonkarwatsadu customers through the use of questionnaires. In addition, interview was
used as a tool to explore data from one Thanapaiboonkarwatsadu entrepreneur using accidental sampling method. The collected data then was analyzed by use of statistical packaged program through: Frequency, Percentage, Mean, Standard Deviation, t-test, One-way ANOVA, and Least Significant Difference (LSD) at statistically significant level of 0.05. The results showed that the majority of the samples are male, 25 - 34 years of age, married, and living together with 3-5 family members, The majorities live in Radniyom Sub-District area in Nonthaburi Province, and graduated in Bachelors Degree. In addition, the majorities are office workers with monthly income of 10,001 to 20,000 Baht. The results revealed that the Service aspect in marketing mix highly affects the overall decision making process for customers to buy construction materials from Thanapaiboonkarwatsadu. Considering each marketing mix, the aspect that possessed the highest Mean are Process, Product, People, Promotion, and Physical Evidence and Presentation respectively. The aspects with the lowest Mean are Promotion and Price respectively.
The results of the comparative study of the marketing mix and personal characteristics that affect the decision making of customers in purchasing construction materials from Thanapaiboonkarwatsadu are as followed: 1.) Gender: Men affects higher level of decision making in purchasing construction materials at Thanapaiboonkarwatsadu than women; 2.) Age: Differences in age affect the decision making in purchasing construction materials at Thanapaiboonkarwatsadu in the aspects of Products, Price, Promotion, Physical Evidence and Presentation, and Process differently; 3.) Status: Differences in status affect the decision making in purchasing construction materials at Thanapaiboonkarwatsadu in the aspects of Products, Price, Promotion, and Physical Evidence and Presentation differently; 4.) Education: Differences in level of education affect the decision making in purchasing construction materials at Thanapaiboonkarwatsadu in the aspects of Products, Price, Physical Evidence and Presentation differently; 5.) Occupation: Differences in occupation affect the decision making in purchasing construction materials at Thanapaiboonkarwatsadu in the aspects of Products, Price, Physical Evidence and Presentation, and Process differently; and 6.) Income: Differences in income affect the decision making in purchasing construction materials at Thanapaiboonkarwatsadu in the aspects of Products, Price, Physical Evidence and Presentation, and Process differently.