4.8.3 Can you answer these questions?

4.8.3.1 Calculate PDF of difference of Max and Min for Gaussian random variables

http://mathematica.stackexchange.com/questions/138027/calculate-pdf-of-difference-of-max-and-min-for-gaussian-random-variables

 
Although this should be a standard question I didn't find it in SE, and it was a nice exercise in Mathematica. 
 
Let $x$ and $y$ be two independent Gaussian random variables with distribution $N(0,1)$.  ...
 

- asked by Dr. Wolfgang Hintze 3votes

4.8.3.2 Implementing t-SNE (t-Distributed Stochastic Neighbor Embedding)

http://mathematica.stackexchange.com/questions/137955/implementing-t-sne-t-distributed-stochastic-neighbor-embedding

 
Context 
 
Six months ago @M.R. asked about an implementation of the t-Distributed Stochastic Neighbor Embedding (t-SNE) algorithm by van der Maaten and Hinton (2008). (@M.R.'s question) 
 
@Alexey  ...
 

- asked by SumNeuron 3votes

4.8.3.3 Is there an easy way to to collect a large number variables into a list or list of lists?

http://mathematica.stackexchange.com/questions/138225/is-there-an-easy-way-to-to-collect-a-large-number-variables-into-a-list-or-list

 
I have a large number of variables in a notebook from a data analysis routine, the results of which now need to be fed through a mathematical model and various items for visualization. 
 
For example,  ...
 

- asked by Joe Kissling 2votes

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