Hi all, new to the forum so please excuse any newbie traits I might have..
I have a question I need help with as I'm sure I'm missing something..
The probability of result X happening is consistently 5%
So if there are 1,000 events in a day you'd expect around 50 X results I think
However, if I only randomly pick 100 from the 1,000 events in the day, then is the probability of finding result X still 5%, or 5 from 100?? or could the fact that I'm only picking 10% of the events in a day mean that the 50 expected X results from 1,000 could ALL be in the 900 I DON'T choose on the day??
each event is a separate entity and not related
I hope someone with more knowledge then me can help, this has been bugging me for a while now
all the best
TonyT1965
Sounds like you want to read up on the binomial distribution.
I don't have emotions and sometimes that makes me very sad.
And this is why not to use a Poisson?
http://www2.cedarcrest.edu/academic/...inks/BvsP.html
Tweet |