Understanding Z-scores 1. What is the z-score of X=3 if it is 2.7 standard deviations to the left of the mean? Z= 2. What is the z-score of X=12 if it is 2.3 standard deviations to the right of the mean? Z=
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- A z-score represents the number of standard deviations a data point (X) is from the mean (μ) of a distribution. The formula for calculating a z-score is: \[ Z = \frac{X - \mu}{\sigma} \] where \( X \) is the value, \( \mu \) is the mean, and \( \sigma \) is the Show more…
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