Standard deviation is a measurement of variation within a set of data points relative to the dataset’s mean average. A higher standard deviation indicates greater variability, while a lower standard ...

Reviewed by Eric Estevez Key Takeaways Standard error measures the accuracy of a sample mean by showing how much it deviates ...

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 ...