AllExperts > Probability & Statistics 
Search      
Probability & Statistics
Volunteer
Answers to thousands of questions
 Home · More Probability & Statistics Questions · Answer Library  · Encyclopedia ·
More Probability & Statistics Answers
Question Library

Ask a question about Probability & Statistics
Volunteer
Experts of the Month
Expert Login

Awards

About Us
Tell friends
Link to Us
Disclaimer

 
 
 
 
About ronny fisher
Expertise
general questions on probability and statistics. please do not send intro prob/stat homework questions.

Experience
have taught probability and stats for 25 years

Education/Credentials
ba in math, phd in stats

Past/Present Clients
federal government, state AG, start-up pharma companies, engineering consulting firms, academic researchers (the list goes on).

 
   

You are here:  Experts > Science > Mathematics > Probability & Statistics > Lotto Probabilities

Probability & Statistics - Lotto Probabilities


Expert: ronny fisher - 9/10/2009

Question
When looking at the probability of picking numbers for the lottery is there any statistical difference between using a specific set of numbers repetitively and without deviation as opposed to choosing new numbers at each drawing? It seems to me if you choose new numbers each time you reset the 1 in x probability of those number winning. Where as, if you use the same numbers you continue the progression of the 1 in x odds of winning. So if a contest has a 1 in 13,000,000 chance of winning if you could play every game for 13,000,000 consecutives weeks you would statistically win at least once. But if you change the numbers at each game you could play 13,000,000 times and statistically still not hit the numbers.

Answer
randall -

it makes no difference what system you use to pick numbers from week to week.
if you play for 13,000,000 weeks using any system, you can expect to win once.
that you can EXPECT to win once doesn't mean you actually will win once. you
may not win at all, or you may win twice, or three times, etc. its like tossing
a fair coin twice (to take a smaller example) - you expect to see one head among
the two tosses - but you could see none - or two. the lottery is just a (much)
bigger version of that simple "game".

ronny


Add to this Answer   Ask a Question


 
User Agreement | Privacy Policy | Kids' Privacy Policy | Help
Copyright  © 2008 About, Inc. AllExperts, AllExperts.com, and About.com are registered trademarks of About, Inc. All rights reserved.