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.

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.

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 …

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.

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.

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 …

Dec 12, 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).

Oct 13, 2025 · Standard deviation is a fundamental statistical measure that quantifies the amount of variation or dispersion in a set of values. It indicates how much the individual data points in …

2 days ago · Standard deviation is a fundamental statistical measure that quantifies the amount of variation or dispersion in a dataset. This comprehensive guide provides all essential formulas …