A low standard deviation indicates that the values tend to be close to their average (also called the expected value or arithmetic mean) of the set, while a high standard deviation indicates that the …

This free standard deviation calculator computes the standard deviation, variance, mean, sum, and error margin of a given data set.

Deviation means how far from the normal. The Standard Deviation is a measure of how spread out numbers are. Its symbol is (the greek letter sigma).

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.

Aug 26, 2025 · Standard deviation tells you how spread out the numbers are in a sample. Once you know what numbers and equations to use, calculating standard deviation is simple!

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 indicates that the …

Feb 11, 2026 · Learn what standard deviation actually measures, how to calculate it step-by-step, and the difference between population (σ) and sample (s). Visual guide with examples.

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 …

Dec 26, 2025 · 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 …

What is Standard Deviation? Standard deviation is the degree of dispersion or the scatter of the data points relative to its mean, in descriptive statistics. It tells how the values are spread across the data …