Entity: STANDARD-DEVIATION
Standard deviation is a statistical measure of the dispersion or spread of data points in a dataset relative to the mean. It indicates how much the values deviate from the average, providing insight into the variability of the data.
Standard Deviation
Etymology
The term 'standard deviation' originated in statistics to describe the spread of data points around the mean.
Definition
Standard deviation is a statistical measure of the dispersion of data points in a dataset relative to the mean. It is calculated as the square root of the variance, providing insight into the variability of the data.
Historical Context
Standard deviation was introduced by Karl Pearson in the late 19th century as a way to quantify the variability of data in a statistical distribution.
Cultural Significance
Standard deviation is widely used in various fields such as finance, science, and social sciences to analyze and interpret data patterns and trends.
Related Concepts
- Variance: A related measure of the dispersion of data points, calculated as the average of the squared deviations from the mean.
- Mean: The average value of a dataset, around which data points are dispersed.
See Also
A statistical measure of the dispersion of data points in a dataset relative to the mean, calculated as the square root of the variance.