What are i.i.d. random variables?

How would you go about explaining i.i.d to non techncial people?

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I think this question is really to soft for the forum but I won't downvote it though –  TheBridge Feb 7 '11 at 16:10
I agree with @TheBridge; I thought this was off-topic when I saw it. –  Shane Feb 7 '11 at 22:22

@Nalini "equi-probable" is not a synonym for "identically distributed." If $x$ and $y$ are i.i.d., this means they are taken from the same distribution, not that all values in that distribution are equally likely (think the normal distribution). $x$ and $y$ would have the same expected value, though. –  Jason Morgan Jan 27 '13 at 21:07