Math 2.0

concept

Standard deviation

Summary

The standard deviation of a random variable is the square root of its variance. It measures the spread of the values in the same units as the variable. The node standard deviation gives the precise definition.

What this node needs for W2
  • edge instance_of in: at least two examples (0 of 2)
  • edge not_instance_of in: at least one non-example (0 of 1)
  • edge specializes both: the more general notions and the special cases (0 of 1)

The writing levels say how complete the text of a node is. They do not measure its truth.

Sources

  1. Web https://en.wikipedia.org/wiki/Standard_deviation, lead section

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Definitions