What Is Standard Deviation For Dummies. The reported margin of error is usually twice the standard deviation. Feb 06 2018 The normal distribution is used to represent how data from a process is distributed and is defined by the mean given the Greek letter μ mu and the standard deviation given the letter σ sigma.
In finance standard deviations of price. Dec 03 2014 Standard deviation is a measure of how spread out a data set is. Apr 05 2015 The video above is more focused on the concept.
The standard deviation Mostly results will fall in the range of 3-standard deviations from the mean.
This other one explains how its calculated. There are two types of standard deviation calculations. A low standard deviation means that most of the numbers are close to the average while a high standard deviation means that the numbers are more spread out. The mean shows the location of the center of the data and the standard deviation is the spread in the data.
