The statistics are off, the odds of someone winning several times is based on how many times they buy ticks but lot's of people play and winners often change their behavior.
First off a lot of people have won once so you need to know how many winners there where and how much they spent to get odds of a second win. Total ticket sales are ~$78 billion assuming 1 winner per 50 million spent that's ~1,560 winners per year assuming they live another 40 years that's 62,000 people that have one once alive at any one time. So now you figure how many tickets do winners buy per year? Call it 5,000$ so now each year there is around 300 million spent by lotto winners on tickets. So, you would expect ~6 people to win a second time each year.
But, this is where behavior's may really get out of whack. Of those 6 you would expect people to think they where destined to win. Let's say 1 person per year now spends 1/3 of there money on the lotto. As the payouts tends to be ~1/2th of ticket sales (jackpot's are around 1/4 but I assume non jackpot wins are rolled back in). They would then have a ~1/6 chance of a third win and a 1/36 chance of a second win. Of course that's just looking at winners for one year so around once every 20 years someone should win 4 times in a row.
First off a lot of people have won once so you need to know how many winners there where and how much they spent to get odds of a second win. Total ticket sales are ~$78 billion assuming 1 winner per 50 million spent that's ~1,560 winners per year assuming they live another 40 years that's 62,000 people that have one once alive at any one time. So now you figure how many tickets do winners buy per year? Call it 5,000$ so now each year there is around 300 million spent by lotto winners on tickets. So, you would expect ~6 people to win a second time each year.
But, this is where behavior's may really get out of whack. Of those 6 you would expect people to think they where destined to win. Let's say 1 person per year now spends 1/3 of there money on the lotto. As the payouts tends to be ~1/2th of ticket sales (jackpot's are around 1/4 but I assume non jackpot wins are rolled back in). They would then have a ~1/6 chance of a third win and a 1/36 chance of a second win. Of course that's just looking at winners for one year so around once every 20 years someone should win 4 times in a row.