Perceived Economic Order Quantity Related Inventory Management Practices and Operational Performance: The Moderating Role of Supply Chain Uncertainty At Training Heights Limited, Abuja

Uncertainty in inventory replenishment and procurement operations has raised concerns about the relationship between inventory management practices and operational performance. This study examined the relationship between perceived Economic Order Quantity (EOQ)-related inventory management practices and operational performance, considering the moderating role of supply chain uncertainty in Training Heights Limited, Abuja. A cross-sectional survey research design was adopted, involving a population of 205 employees selected through a census approach. Primary data were collected using a structured five-point Likert-scale questionnaire, with 188 valid responses analysed through hierarchical moderated regression using IBM SPSS Statistics version 27. The findings revealed positive associations between perceived order quantity optimisation and cost efficiency, and between inventory cost management and inventory availability. Supply chain uncertainty significantly and negatively moderated both relationships, accounting for additional explained variances of 5.9% and 6.6%, respectively. The study concluded that employees' favourable assessments of EOQ-related inventory management practices were associated with favourable assessments of operational performance, although these relationships weakened under higher perceived supply chain uncertainty. It recommended flexible inventory planning, periodic assessment of procurement conditions and improved supplier coordination. Since the study relied exclusively on questionnaire responses, its findings reflect perceived inventory management practices rather than objectively verified EOQ implementation or measured inventory cost savings.

Economic Order Quantity, inventory management practices, order quantity optimisation, perceived operational performance, supply chain uncertainty

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