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ABSTRACT
This study is to determine the statistical variability of concrete mixes fromnominal values. The values gotten from this research work are used to compare the standard mixes alreadybeen used in construction. A statistical analysis between the actual and nominal breaking strengths of the prescribedmixtures was carried out to verify the differences from the standard strengths of the nominal mixtures currently in use and to compare it with the results of this research workwithrefrences made to previous work done. This study was conducted to investigate the compressive strength of concretecubeproduced in the laboratory. The practical aspect of this study saw the use of five different mixtures. The mixing ratio is M5, M10, M15, M20, M25. Therefore, 60 cubes (100x100)were cast using different water-cement ratios for each mix. After the results for the five(5)different mix were gotten I then employed different statistical approach to the values gottenfrom the lab in other to properly compare the nominal mixes from the actual vlues gotten.
