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The Standard Deviation Tutorial

Approximate time to complete: 20 Minutes

  In this tutorial you will learn the following concepts:
  1. Why you need a measure of variability.
  2. Why the standard deviation is a good measure of the average distance to the mean.
  3. How to calculate the standard deviation and variance.
  4. How to interpret and use the standard deviation.
  5. Every-day examples of the standard deviation.

This tutorial contains the following lessons: