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 …

Deviation just means how far from the normal. The Standard Deviation is a measure of how spreadout numbers are.

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.

Sep 17, 2020 · 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.

Jan 2, 2025 · 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 …

Standard deviation (SD) is a measure of the amount of variation in a set of values. A low SD—close to zero—indicates that the values tend to be close to the mean of the set, while a …

Nov 4, 2025 · Standard Deviation is defined as the degree of dispersion of the data points from the mean value of the data points. Standard deviation is a measure used in statistics to …

May 10, 2025 · At its core, standard deviation is a measure of the dispersion or spread of a set of data points around their mean (average). In simpler terms, it tells us how much the individual …

Oct 16, 2025 · standard deviation, in statistics, a measure of the variability (dispersion or spread) of any set of numerical values about their arithmetic mean (average; denoted by μ).

Jun 4, 2025 · Standard deviation is a statistical measurement that looks at how far discrete points in a dataset are dispersed from the mean of that set. It is calculated as the square root of the …