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Which mathematical expectation is greater, lottery or stock trading?
There is a lot of luck in lottery tickets, but there is a little less luck in stocks.

Stocks eat according to the weather. When the market is good, stock gods are everywhere. When it's bad, everyone has a miserable green face. The lottery is to watch people eat, and a person can ascend to heaven by himself.

The lottery return rate is about 5 1%. If we only look at the bonus amount, if everything is true and fair, then his arithmetic average is 0.5 1, that is, every investment of 1 yuan will eventually become 0.5 1 yuan.

In the long run, stocks will break even and lose seven, with only 10% making money and 70% losing money. Then his arithmetic average is less than 0.4 (1+0.65,438+0-0.7), and he will invest1yuan, which will eventually become less than 0.40 yuan.

So is it more cost-effective to win the lottery? Don't! The winning proportion of lottery tickets above 10 thousand yuan is very, very low. Just look at the number of bets and winners in each period to know the probability. The profit ratio of stocks is much higher than this figure, at least 1%, but few people make high profits. Every time you bet on 2 yuan in the lottery, you will win 5 million yuan, but those who invest 2 million shares cannot guarantee 5 million yuan.

Therefore, the mathematical expectations of these two things cannot be compared because of the different algorithms. People who believe in lottery always believe, and people who believe in stocks always believe.