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t-distribution

created Dec 6th 2021, 02:13 by KhandayOvais


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The t-distribution is used for estimation and hypothesis testing of a population mean (average).
 
The t-distribution is adjusted for the extra uncertainty of estimating the mean.
 
If the sample is small, the t-distribution is wider. If the sample is big, the t-distribution is narrower.
 
The bigger the sample size is, the closer the t-distribution gets to the standard normal distribution.
 
Below is a graph of a few different t-distributions.

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