View Full Version : real and fake tosses

susumandrai

04-08-2012, 05:23 PM

Given two sets of 50 coin tosses, how would you tell if one set is fake or real?

Please tell me a method. I remember seeing a formula once, but unfortunately i have forgotten :(

tkhunny

04-08-2012, 06:13 PM

If you tossed the coins, then your set of tosses is real.

What's the question?

susumandrai

04-08-2012, 09:05 PM

If you tossed the coins, then your set of tosses is real.

What's the question?

I mean one set of 50 is tossed and recorded and the other is just written down by thinking in your head.

I mean one set of 50 is tossed and recorded and the other is just written down by thinking in your head.

What a nonsense thread! Why reply to such?

lookagain

04-09-2012, 11:20 AM

Given two sets of 50 coin tosses,

how would you tell if one set is fake or real?

Please tell me a method. I remember seeing a formula once,

but unfortunately i have forgotten :(

susumandri,

if you really had a serious question regarding this idea, then I would have expected

you to have formulated it such as this:

"Given two sets of 50 coin tosses, one done experimentally and the other 50 chosen

off the top of your head, which set(s) of coin tosses would be indicative of a fair coin?"

If a set of 50 coin tosses (actual or conjured up) would deviate "too much" **

from an average of 25 heads and 25 tails, then I would state that that

set of 50 tosses indicates that you aren't using a fair coin.

** On average, for a "large number" of tosses of a fair coin, the proportion of

heads to tails will more so even out.

Please type a question as originally posed by an instructor and/or a textbook,

for serious consideration.

susumandrai

04-09-2012, 03:35 PM

susumandri,

if you really had a serious question regarding this idea, then I would have expected

you to have formulated it such as this:

"Given two sets of 50 coin tosses, one done experimentally and the other 50 chosen

off the top of your head, which set(s) of coin tosses would be indicative of a fair coin?"

If a set of 50 coin tosses (actual or conjured up) would deviate "too much" **

from an average of 25 heads and 25 tails, then I would state that that

set of 50 tosses indicates that you aren't using a fair coin.

** On average, for a "large number" of tosses of a fair coin, the proportion of

heads to tails will more so even out.

Please type a question as originally posed by an instructor and/or a textbook,

for serious consideration.

Sorry everyone, the above is what I was really looking for !

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