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Z = (x-mu)/sigma. So, for your example, any x value can be transformed to Z-score by the formula Z = (x-100)/20.

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Q: How do I find the Z score for tests with mean of 100 and a standard deviation of 20?
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Related questions

How do you find out the z-score?

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Is variance the square root of standard deviation?

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There is insufficient information in the question to answer it. To determine Z-Score, you need raw score, which you gave, but you also need mean and standard deviation, which you did not give. Please restate the question.


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