Statistical analysis plays a crucial role in several areas, including engineering, where it helps in making impartial decisions to optimize production processes. Analysis of Variance (ANOVA) is often used to compare sample groups, allowing the simultaneous evaluation of several means, although it does not identify which groups differ from each other. Post-hoc tests, such as Tukey's test, solve this problem, but their reliability decreases with larger amounts of groups. In this work, a new function was developed for Microsoft (MS) Excel, taking advantage of integration with Visual Basic for Applications (VBA), to simplify direct comparisons between sample groups. This function makes it possible to perform an ANOVA for two sample groups based on the provided size, mean, and standard deviation, generating the P value as a result, which can be directly compared to the significance level adopted by each user. The developed function proved to be effective and resulted in significant productivity gains due to its integration with native MS Excel functions.

This work investigates the flexural and hardness behavior of epoxy composites reinforced with ramie fibers, with and without sweat absorption. Composites containing 0%, 40%, and 60% fiber volume fractions (vol%) were produced and subjected to mechanical tests and morphological analysis. Results show that ramie fiber addition improves flexural strength, stiffness, and surface hardness compared to pure resin, with the 40% fraction exhibiting the best balance between reinforcement and structural integrity. However, artificial sweat absorption significantly reduces flexural properties, mainly due to fiber swelling and matrix–fiber interface degradation, as evidenced by SEM analysis. In contrast, hardness was less affected by sweat exposure, indicating greater surface stability. The main objective of this study is to evaluate the influence of artificial sweat absorption on the flexural and hardness behavior of epoxy composites reinforced with different ramie fiber contents. These findings highlight the potential of ramie fiber composites for sustainable applications, while also emphasizing the importance of moisture control to ensure long-term performance.