How Expected Return and Standard Deviation Impact Your Portfolio

Expected return and standard deviation can help you analyze investment portfolios. Learn their differences, uses, and ...
Simon Fraser University

Example 34.2: Specifying Standard Values for the Process Mean and Standard Deviation

For example, suppose that the manufacturing process described in the previous example produces engines whose weights are normally distributed with a mean of 1250 and a standard deviation of 12. The ...
Simon Fraser University

Example 42.2: Estimating the Process Standard Deviation

The following data set (WIRE) contains breaking strength measurements recorded in pounds per inch for 25 samples from a metal wire manufacturing process. The subgroup sample sizes vary between 3 and 7 ...
BBC

Statistical skills: Video playlist

An animated guide explaining how the standard devition can give you a clearer picture of a sample than averages alone. An example involving zoo keepers and some very dangerous animals demonstrates ...