The mean for the standard normal distribution is zero, and the standard deviation is one. For example, if the mean of a normal distribution is five and the standard deviation is two, the value 11 is three standard deviations above (or to the right of) the mean. 21K 1.5M views 3 years ago Statistics This statistics video tutorial provides a basic introduction into standard normal distributions. For example, if your data point is in cell A1, and your. A z-score is measured in units of the standard deviation. A: You can calculate a z-score in Excel using the formula: (data point - mean) / standard deviation. The standard normal distribution is a normal distribution of standardized values called z-scores.
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