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. Smaller values indicate that the data …

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 …

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.

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 variance. If...

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 high SD indicates that …

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 …

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 …

Master Interpreting Standard Deviation with free video lessons, step-by-step explanations, practice problems, examples, and FAQs. Learn from expert tutors and get exam-ready!

Oct 13, 2025 · Simply put, standard deviation answers the question: "How spread out is my data?" Key aspects of standard deviation include: As one of the most widely used measures of dispersion, …