Gaussian distribution

bell curve

The distribution follows 68–95–99 rule . What is this ??

assuming μ as median value in bell curve its first standard deviation lies are 68%, 2nd are 95 and third are 99.7%.

Standard Normal Distribution and Standard Scores

The name itself denotes as standard which says the values are standard. The mean value is 0 and standard deviation is 1. It is also called as Z-distribution. And similarly the value in such distribution is called as z-score.

Standardization :: How to calculate standard scores

formula ::

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