Calculate the standard deviation of Gaussian distribution ,thanks

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SUMMARY

The discussion centers on calculating the standard deviation of a one-dimensional Gaussian distribution defined by the function f(x) = exp(-x^2 / (2q)) / q / √(2pi). The variable 'q' represents the population standard deviation, which is distinct from the sample standard deviation. The calculation of 'q' requires knowledge of calculus, specifically integration, to derive the standard deviation of a random variable. The thread was closed due to the lack of effort shown by the original poster.

PREREQUISITES
  • Understanding of Gaussian distribution and its properties
  • Familiarity with the concept of standard deviation
  • Basic knowledge of calculus, particularly integration
  • Ability to differentiate between population and sample standard deviation
NEXT STEPS
  • Study the derivation of the population standard deviation in Gaussian distributions
  • Learn about integration techniques in calculus
  • Explore the differences between sample and population standard deviations
  • Review applications of Gaussian distributions in statistics
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Students in statistics, mathematicians, and anyone interested in understanding Gaussian distributions and standard deviation calculations.

chener
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Given a one-dimensional Gaussian distribution, distributed as following:

f (x) = exp (-x ^ 2 / (2q)) / q / √ (2pi)

proof which q is the standard deviation

Thanks !The standard deviation is defined by:
http://www.mathsisfun.com/data/standard-deviation-formulas.html
 
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chener said:

That link defines the "sample standard deviation".

The number 'q' is the "population standard deviation". The definition of "population standard deviation" ( which is the "standard deviation of a random variable") involves doing an integration. Are you familiar with calculus?
 
Misplaced schoolwork-type question with no effort shown. Thread is closed.
 

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