THE EFFECT OF MINIMIZING DEFECTIVE PRODUCTS THROUGH EFFECTIVE PRODUCTION PLANNING AND CONTROL OF MANUFACTURING FIRMS IN RIVERS STATE

Abstract

This study examine the effect of minimizing defective products through effective production planning and control of manufacturing firms in Rivers State. descriptive survey   research design was adopted for this study as this study seek to determine the influence of one variable over the other. The population of this study is thirty two (32) manufacturing companies in rivers state which are registered with the rivers state branch of manufacturers association of Nigeria (MAN). The study adopted the  census techniques. With  regard to the respondents of the study given  the strategic nature of the study, three  key managers (production manager, manager, quality assurance unit  and logistics manager) were  chosen as respondents from each using simple random sampling,  of the  thirty two firms constitute the study subject. this gave us a total of ninety two (92) for the study.  structured questionnaire instrument title” minimizing defective products for effective production planning and control in manufacturing firms questionnaire “was developed on five point likert scale . The result of the cronbach's alpha reliability test indicates .708 which is above .70 which implies that the items are reliable. regression analysis was used to test the hypotheses using spss (statistical package social sciences). The study revealed that  quality control inspection significantly influences capacity planning of manufacturing firms in Rivers state. Quality control inspection significantly influences production scheduling of manufacturing firms in Rivers state. Continuous improvement process significantly influences capacity planning of manufacturing firms in Rivers state. Continuous improvement process significantly influences production scheduling of manufacturing firms in Rivers state. The study concluded that minimizing defective products significantly influence effective production planning and control of manufacturing firms in Rivers State. The study recommended that manufacturing firms should implement a comprehensive quality management system that includes regular quality audits, training programs for employees, and continuous improvement initiatives to enhance product quality.