# This post addresses standardized z-scores for comparisons.

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How can standardized z-scores be used to compare people across different contexts, such as the batting averages of two players -one who played in the 1970s and one who played in the 1990s?

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The solution provides a detailed discussion with references explaining how standardized z-scores can be used to compare people across different contexts, such as the batting averages of two players -one who played in the 1970s and one who played in the 1990s. References are provided. This solution is written based on 25+ years of professional experience in the business industry.

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The z-score can be used for comparison purposes across different contexts because of how you're doing the comparison. You're not comparing the player from the 1970s directly against the player from the 1990s. Each set of data is being compared to itself, the data in one set (from the 1970s) is being drawn together. ...

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