What if you have similar cards in the deck? Do you still expect to experience the same level of randomness?
--- On Fri, 1/22/10, Rad! <conradakunga@gmail.com> wrote:
From: Rad! <conradakunga@gmail.com>
Subject: Re: [Skunkworks] random sampling
To: "Skunkworks Forum" <skunkworks@lists.my.co.ke>
Date: Friday, January 22, 2010, 3:04 PM
It should be pretty straightforward to prove using probability.
But before we get there let's use a different analogy.
Say you have a pack of cards. If you shuffle the pack thoroughly and then pick out cards at random, the randomness of the picked cards is just as random as if you
shuffled the pack twice before picking the cards.
Shuffling already random cards again does not introduce, for lack of a better word, 'more randomness'
Ergo given a randomized set
[1,5,2,4,3]
So for a single run If you pop the elements in sequence, the result will be as random as popping them at random. On Fri, Jan 22, 2010 at 3:51 PM, wesley kirinya <kiriinya2000@yahoo.com> wrote:
I've noticed a difference between accessing a sorted set randomly versus accessing a randomized set randomly. I've not checked accessing a sorted set randomly versus accessing a randomized set sequentially.
NB: I always re-seed the random number generator with unique values (i.e. I dont repeat the seed value) before each random call.
A sound math/statistical explanation would be 8~)
Subject: Re: [Skunkworks] random sampling
Date: Friday, January 22, 2010, 1:23 PMI actually doubt there is any
difference in any of the three scenarios.
A - [1,2,3,4,5]
B - [5,1,4,2,3]
Given one pass to access each set, accessing set A randomly for values should give you results just as random as accessing set B regardless if randomly or in sequence
On Fri, Jan 22, 2010 at 2:15 PM, Nicholas Loki <lokimwenga@yahoo.com> wrote:
Hi Wesley/ Rad, How about this:
>> Or, for that matter, a randomized set sequentially
You get a sequential set of random values.
>> sorted set randomly You get a random value set with a high likelihood of some sortedness :-). >> randomized set randomly? Everything is random. Caveat: No scientific basis to my observations :-).
KR, Loki "Excellent people exceed expectations". |
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