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Graphs the pdf or pmf and highlights what area or probability is present in user defined locations. Visualize is able to provide lower tail, bounded, upper tail, and two tail calculations. Supports strict and equal to inequalities. Also provided on the graph is the mean and variance of the distribution.
Package details 


Author  James Balamuta [aut, cph, cre] 
Maintainer  James Balamuta <[email protected]> 
License  MIT + file LICENSE 
Version  4.3.0 
URL  https://github.com/coatless/visualize http://thecoatlessprofessor.com/projects/visualize/ 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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