real and fake tosses

susumandrai

New member
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

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

What's the question?

susumandrai

New member
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.

pka

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

lookagain

Senior Member
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

New member
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 !