Comparing Normal and Student's t-Distributions

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The standard normal distribution (blue) with mean 0 and standard deviation 1 and Student's -distribution (red) become very similar as the degrees of freedom for the
-distribution increase. The left panel displays the two probability density functions (PDFs) and the right panel displays the two cumulative distribution functions (CDFs).
Contributed by: Gary McClelland (March 2011)
Open content licensed under CC BY-NC-SA
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"Comparing Normal and Student's t-Distributions"
http://demonstrations.wolfram.com/ComparingNormalAndStudentsTDistributions/
Wolfram Demonstrations Project
Published: March 7 2011