Why should an analyst Always plot cost data in addition to applying?

An analyst should always plot cost data in addition to applying statistical methods because visual representations can reveal trends, patterns, and outliers that may not be evident from raw data alone. Graphical analysis enhances understanding and communication of complex cost relationships, making it easier to identify areas for improvement or potential issues. Moreover, visualizing data helps validate assumptions and supports more informed decision-making. Overall, plotting cost data provides a comprehensive perspective that complements quantitative analysis.