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How to Calculate Beta Z-Score

The z-score is used to determine the context of a number which indicates whether it is high, low, or a certain size. To do this you will need to use specific variables which include the raw score, the mean of a population or range of number and the standard deviation. When performing a calculation with these variables a z-score can be found. You can calculate the z-score from an IQ score such as 115.

Instructions

- 1
  Write down the equation "z = (x -- µ) / σ" on a piece of paper. In this equation, the letter "z" represents the resulting z-score. The letter "x" represents the raw score. The symbol "µ" represents the mean of the population. And the symbol "σ" represents the standard deviation. Make a note for the variables to use in the equation.
- 2
  Insert 115 for "x," 100 for "µ" and 15 for "σ" in the equation. You now have an equation that appears as "z = (115 -- 100) / 15."
- 3
  Subtract 115 from 100 which equals "15." Now divide 15 by 15 for a result of 1. This is the z-score for the equation.

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