The standard deviation formula may look confusing, but it will make sense after we break it down. In the coming sections, we'll walk through a step-by-step interactive example.

The formula we use for standard deviation depends on whether the data is being considered a population of its own, or the data is a sample representing a larger population.

Calculating standard deviation step by step Standard deviation of a population Mean and standard deviation versus median and IQR Concept check: Standard deviation Statistics: …

Aprende a calcular la desviación estándar paso a paso con ejemplos interactivos y explicaciones detalladas en este artículo de Khan Academy.

Statistics and probability Course: Statistics and probability > Unit 3 Lesson 4: Variance and standard deviation of a population

Calculating standard deviation step by step Standard deviation of a population Mean and standard deviation versus median and IQR Concept check: Standard deviation Statistics: …

The standard deviation (sigma) is a measure of how much the data is spread out around the mean, not a better guess as to what the mean should be. A small value of sigma indicates that …

What is the average age of the bears at your zoo? What is the standard deviation? Round your answers to the nearest tenth.

The range is easy to calculate—it's the difference between the largest and smallest data points in a set. Standard deviation is the square root of the variance. Standard deviation is a measure …

A standard deviation close to 0 indicates that the data points tend to be close to the mean (shown by the dotted line). The further the data points are from the mean, the greater the standard …