This paper investigated factors affecting the performance of manufacturing workers in industries in southern Eastern Nigeria. Experiments were designed to investigate those identified specific factors anticipated that have effect on operators of machines in manufacturing shops; to generate information and data needed in the analyses. Results obtained from the various statistical analyses performed were studied and interpreted. The correlation coefficients of the chosen factors: motivation, Power/Energy, safety, Maintenance, Training, equipment, and Technology were respectively calculated and obtained as: 0.95, 0.70, 0.72, 0.78, 0.95, 0.95 and 0.86; the coefficient of determination, R2 obtained to be 0.948 for overall data, and for each studied factors as: 0.90, 0.49, 0.52, 0.61, 0.91, 0.90 and 0.74 respectively; the variance ratio (VR) is 195.5; and F- value and t – values returned by the SPSS program are greater than the each respective statistical table value at a confidence level of 5%, which indicate good acceptance level. Curves were generated to observe the behavioural patterns of the relationship between manufacturing workers factors effect and their performances. Results obtained show that the identified factors affect the performance of manufacturing workers in the manufacturing industries, with little or no effect of co linearity.
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