. How numerical value related to standar unit
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Although the finance industry can be complex, an understanding of the calculation and interpretation of fundamental mathematical building blocks is still the foundation for success, whether in accounting, economics or investing.
Standard deviation and the Z-score are two such fundamentals. Z-scores can help traders gauge the volatility of securities. The score shows how far away from the mean—either above or below—a value is situated. Standard deviation is a statistical measure that shows how elements are dispersed around the average, or mean. Standard deviation helps to indicate how a particular investment will perform, so, it is a predictive calculation. In finance, the Z-score helps to predict the probability of an entity filing for bankruptcy and is known as the Altman Z-score.
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