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
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Mean using Z score formula is defined as the average of all the observations in the sample data observation is calculated using Mean of data = Value of A-Z Score * Standard Deviation. To
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Standard deviation using Z score formula is defined as ratio of deviation of observation from mean to z score is calculated using Standard Deviation = (Value of A-Mean of data)/ Z Score.