standard deviation
Statistical index of the degree of deviation from central tendency, namely, of the variability within a distribution; the square root of the average of the squared deviation’s from the mean.
A measure of dispersion or variation used to describe a characteristic of a frequency distribution.
The degree of variation in a sample from the mean value.
Dictionary > Standard deviation
You will also like...

Genetics and Evolution
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

The Human Nervous System
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

Roots
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

Psychiatry & Mental Disorders
Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

Birth Control and Contraception
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..