Standard Deviation (SD or σ)

A measure of the dispersion (spread) of a data set. This SD is obtained by finding the square root of the variance of the dataset. The variance is the expected value (the average assuming an infinite number of values) of the squared deviation from the mean.

Glossary Term & Definition Glossary Index

Access Our Online Courses
And Premium Content Now!

With a monthly subscription to BH Education, you’ll get access to
12 online courses, 600+ lessons, 200+ videos, powerful apps, online
calculators and lots more, to make online learning easy.

Subscribe From Only $15,-/Monthly
14 day free trial! No commitment required! You can cancel any time!

You have Successfully Subscribed!