University of Illinois
University of Illinois: Spreading It Thick
Resource contains the definition for variance. It also shows students how to calculate the variance. There is a link to a bar graph that displays variance for the data example.
University of Illinois
University of Illinois: A "Vary" Nice Picture
Site from the University of Illinois contains a graphical representation of variance. A follow-up question for the user and a link to standard deviation - a related statistical topic - are also provided.
Other
Meta Calculator: Statistics Calculator
A web-based statistics calculator to find mean, median, standard deviation, variance and ranges.
BBC
Bbc: Standard Deviation
A demonstration of how to find the standard deviation of a set of data. Several examples and a practice test are offered.
Math Is Fun
Math Is Fun: Showing the Results of a Survey
A variety of ways to display the results of a survey are listed, including tables, statistics and different types of graphs.
Calculator Soup
Calculator Soup: Standard Deviation Calculator
Standard deviation is a statistical measure of diversity or variability in a data set. A low standard deviation indicates that data points are generally close to the mean or the average value. A high standard deviation indicates greater...
Calculator Soup
Calculator Soup: Statistics Calculator
Calculate basic summary statistics for a sample or population data set including minimum, maximum, range, sum, count, mean, median, mode, standard deviation and variance.
Calculator Soup
Calculator Soup: Variance Calculator
Variance is a measure of dispersion of data points from the mean. Low variance indicates that data points are generally similar and do not vary widely from the mean. High variance indicates that data values have greater variability and...
Curated OER
Image for Standard Deviation
A quick definition and overview of statistical standard deviation. A piece of clip art is provided to aid in understanding, and links are given for related terms.