Standard deviation - Wikipedia, the free encyclopedia
In statistics and probability theory, standard deviation (represented by the symbol σ) shows how much variation or "dispersion" exists from the average (mean, or ...
http://en.wikipedia.org/wiki/Standard_deviation
Standard Deviation - Welcome to DocumentingExcellence.com
Standard Deviation . Standard deviation is the square roots of the sum of the squared differences between each score and the mean average of all scores.
http://www.documentingexcellence.com/stat_tool/SD.htm
Standard Deviation Definition | Investopedia
Standard Deviation - Definition of Standard Deviation on Investopedia - 1. A measure of the dispersion of a set of data from its mean. The more spread apart the data ...
http://www.investopedia.com/terms/s/standarddeviation.asp
Mean, Mode, Median, and Standard Deviation
Mean, Mode, Median, and Standard Deviation The Mean and Mode. The sample mean is the average and is computed as the sum of all the observed outcomes from the sample ...
http://ltcconline.net/greenl/courses/201/descstat/mean.htm
What is standard Deviation, what does it show? | Answerbag
What is standard Deviation, what does it show? The standard deviation is a statistic that tells you how tightly all the various examples are clustered around the mean ...
http://www.answerbag.com/q_view/162651
What does the standard deviation of a data set tell us about the ...
Standard Deviation The following two data sets, A and B, have the same mean (average): A: 48, 49, 50, 51, 52 B: 30, 40, 50, 60, 70 The distribution of the data about ...
http://wiki.answers.com/Q/What_does_the_standard_deviation_of_a_data_set_tell_us_about_the_data_and_why_is_the_standard_deviation_an_important_measure
What does it mean if the standard deviation is greater than the mean
The standard deviation and the arithmetic mean measure two different characteristics of a set of data. The standard deviation measures how spread out the data is ...
http://wiki.answers.com/Q/What_does_it_mean_if_the_standard_deviation_is_greater_than_the_mean
Standard Deviation - Batesville Community School Corporation
This number () is called the "standard deviation of the mean", and whenever we say "standard deviation" in reference to a mean value, we mean "standard deviation of ...
http://www.batesville.k12.in.us/physics/APPhyNet/Measurement/standard_deviation.htm
Standard Deviation - RobertNiles.com
The standard deviation is kind of the "mean of the mean," and often can help you find the story behind the data. To understand this concept, it can help to learn about ...
http://www.robertniles.com/stats/stdev.shtml