zealot -

The binomial distribution seems appropriate.

Enter 0,1,2,...,10 in cells A1:A11.

In cell B1 enter =BINOMDIST(A1,10,5/12,FALSE) and copy down to B11.

- Mike
http://www.mikemiddleton.com

"zealot" wrote in message
...

Hello there!!!

I wonder if anyone familiar with the probability theory can help me to
clarify the following.
There is trading system which generates a winning trade per ONE stock
in ONE month’s time with a probability of 5/12 (0,4166%). If the
system trades 10 independent stocks the probability of any number of
winning trades occurring out of all of them in ONE month is shown
below:

None 0,0046
One 0,0326
Two 0,1047
Three 0,1995
Four 0,2494
Five 0,2172
Six 0,1272
Seven 0,0519
Eight 0,0139
Nine 0,0022
Ten 0,0002

I took these values from a book…I tried to reproduce these values
in the spreadsheet that I attached. My table looks as follows:

0 0,0046
1 0,0033
2 0,0023
3 0,0017
4 0,0012
5 0,0008
6 0,0006
7 0,0004
8 0,0003
9 0,0002
10 0,0002

As you see the first and the last values agree but the rest do not. I
was multiplying the probability of each of the 10 different trade
probabilities by each other and got such small results unlike the
author…Do you think you can help me to recreate the logic that
the author used to generate his table of the probabilities?

Thanks a lot!!!

I attach the excerpt from the book and the spreadsheet

D


+-------------------------------------------------------------------+
|Filename: probability.zip |
|Download: http://www.excelbanter.com/attachment.php?attachmentid=85|
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zealot