Standard deviation - Wikipedia
...The standard deviation of a random variable, sample, statistical population, data set, or probability distribution is the square root of its variance. (For a finite population, variance is the average of the squared deviations from the mean.)...
https://en.wikipedia.org/wiki/Standard_deviation
Standard Deviation and Variance - Math is Fun
...Deviation just means how far from the normal. The Standard Deviation is a measure of how spreadout numbers are....
https://www.mathsisfun.com/data/standard-deviation.html
Standard Deviation Calculator
...This free standard deviation calculator computes the standard deviation, variance, mean, sum, and error margin of a given data set....
https://www.calculator.net/standard-deviation-calculator.html
Standard Deviation - Definition, Symbol, Formula, Graph, & Examples
...Standard deviation is a statistical measure that shows how much a group of data is spread out or dispersed from its mean value (average). A smaller standard deviation value indicates that the values are close to the mean, whereas a larger value means the dataset is spread out further from the mean....
https://mathmonks.com/standard-deviation
How to Calculate Standard Deviation: 12 Steps (with Pictures)
...To calculate standard deviation, start by calculating the mean, or average, of your data set. Then, subtract the mean from all of the numbers in your data set, and square each of the differences....
https://www.wikihow.com/Calculate-Standard-Deviation
How to Calculate Standard Deviation (Guide) | Calculator & Examples
...The standard deviation is the average amount of variability in your dataset. It tells you, on average, how far each score lies from the mean....
https://www.scribbr.com/statistics/standard-deviation/
Standard Deviation: Interpretations and Calculations - Statistics by Jim
...The standard deviation (SD) is a single number that summarizes the variability in a dataset. It represents the typical distance between each data point and the mean....
https://statisticsbyjim.com/basics/standard-deviation/
Standard deviation - Math.net
...Standard deviation is a statistical measure of variability that indicates the average amount that a set of numbers deviates from their mean. The higher the standard deviation, the more spread out the values, while a lower standard deviation indicates that the values tend to be close to the mean....
https://www.math.net/standard-deviation
Standard Deviation - GeeksforGeeks
...Standard deviation is a measure used in statistics to understand how the data points in a set are spread out from the mean value. It indicates the extent of the data's variation and shows how far individual data points deviate from the average....
https://www.geeksforgeeks.org/maths/standard-deviation-formula/
Formula | How to Calculate Standard Deviation? - Cuemath
...It tells how the values are spread across the data sample and it is the measure of the variation of the data points from the mean. The standard deviation of a data set, sample, statistical population, random variable, or probability distribution is the square root of its variance....
https://www.cuemath.com/data/standard-deviation/