TeSS has been unable to access this material's URL since 26 June 2018 - the page may have been moved.
Variance and standard deviation
We have tools (like the arithmetic mean) to measure central tendency and are now curious about representing how much the data in a set varies from that central tendency. In this tutorial we introduce the variance and standard deviation (which is just the square root of the variance) as two commonly used tools for doing this.
Keywords: Descriptive statistics
Remote updated date: 2016-08-14
Activity log
