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 )
Standard Deviation Calculator This free standard deviation calculator computes the standard deviation, variance, mean, sum, and error margin of a given data set
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
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
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
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