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October 31st, 2016, 04:02 AM  #1 
Newbie Joined: Oct 2016 From: Poland Posts: 2 Thanks: 0  Interesting array
I generated array and I wanted to check is it exactly random: 14,8 23 28,2 18,4 21,8 19,8 32,6 21,4 23,2 20,4 23,4 21 22,4 21,6 29,8 14,2 10,8 21,6 23,6 30 24,2 20,8 19 21,2 15,6 23,6 21,8 24,2 30,2 15,6 20 16,8 20,8 25 11,4 26,2 30,6 15,8 14 23,4 28,2 22 19,8 20,8 22,6 17,2 26,2 28,4 32,4 22 Last edited by skipjack; October 31st, 2016 at 04:10 AM. 
October 31st, 2016, 04:09 AM  #2 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,634 Thanks: 2620 Math Focus: Mainly analysis and algebra 
No, it isn't.

October 31st, 2016, 06:02 AM  #3 
Newbie Joined: Oct 2016 From: Poland Posts: 2 Thanks: 0 
So, how to find the pattern, equation for this? How to proof that it isn't random?

October 31st, 2016, 06:34 AM  #4 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,634 Thanks: 2620 Math Focus: Mainly analysis and algebra 
It's at best psuedorandom, because you generated it by some method. As far as I'm aware you can't determine whether a given set of numbers is random or not, but you can evaluate, through statistical analysis, how random a given method of generating sets of numbers is. The main reason for this is that any set of numbers could have been generated by a truly random process  that's what random means. A truly random process would occasionally return (20, 20, 20, 20, 20, 20, ..., 20), for example. 

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array, arrays, interesting, math, randomness 
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