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This video discusses the concept of standard deviation, and why people often don't understand it. It provides an example to help illustrate the point. Standard deviation is a statistic used to measure the variability of a set of data, and it can be used to determine when a set of data is close to being Gaussian. The video explains that standard deviation is not a metric that is intuitively obvious, and it can be misleading when used to measure correlation.

**00:00:00**In this video, the presenter explains that standard deviation is not a metric that is used to describe how much something moves on average every day. Instead, it is a metric that is used to describe how much something moves about on average (or, in other words, how spread out or scattered the data is). The presenter also explains that standard deviation is related to fat tails.**00:05:00**Standard deviation is a statistic used to measure the variability of a set of data. It is used to determine when a set of data is close to being Gaussian, and it can be used to derive some limit theorems in probability theory. Standard deviation is not a metric that is intuitively obvious, and it can be misleading when used to measure correlation.**00:10:00**The video discusses the concept of standard deviation, and why people often don't understand it. It provides an example to help illustrate the point.

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