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The z-score can be calculated by subtracting the population mean from the raw score, or data point in question (a test score, height, age, etc.), then dividing the difference by the population standard deviation: z = x - μ σ where x is the raw

Use the following format to find a z-score: z = X - μ / σ. This formula allows you to calculate a z-score for any data point in your sample.

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