An example of a female lecturer’s suggestion on how to make a profit on the topic caused a stir

For example for a lesson on random variables, this part of variance and standard deviation after being recorded by students and shared on social networks has attracted the attention of the online community.

Specifically, in the lesson, the lecturer gave an example of “Suggesting a profitable game strategy” with the content:

“The principle of profitable play is that if you win, you have to get back all of your previous losses and add a little profit.

For this to be possible, the probability of winning each time must be large enough, say 1/2. That is, we buy 50 numbers each time. Because about every 2 times, you will win 1 time, so in principle, the above method will be profitable.

But if you accidentally lose many times in a row, the next capital will be very large. Therefore, the sufficient (sure) condition to be profitable is that you must have unlimited money!”.

A second-year student at the Faculty of Management Economics, majoring in Business Administration of Thang Long University, said that this is a class on Statistical Probability and Applied Statistics in Socio-economics by lecturers of State, morning 28/. 4. According to the female student, this example was given by the teacher as an example for the lesson on random variables, the variance and standard deviation.

Talking to VietNamNet, Ms. N. said that when she saw the information posted by students on social networks, she was also startled, feeling a bit sensitive, even though the comments were only in a happy direction.

According to Ms. N, this is a fun example of a random variable probability application. The Faculty’s general lecture has many examples, including an example of a problem game, thereby wanting to let students know that the probability of winning is very low from calculations based on learned knowledge.

This female lecturer said, the last message that she wants to convey is still not to play the game. “Because there is still a plan to make a profit, but to ensure that, you must have unlimited money on hand to follow.

I have a comment attached to the slide for students that no matter what strategy you follow, when you have consecutive risks, if you want to win, you must have unlimited money to follow.

That (infinite money – PV) is not easy, so basically the player will lose, because usually before he wins, he runs out of money. In short, my final message is that no matter what the situation, students should not play the puzzle.”

Ms. N. said she herself disagrees with students taking and sharing that picture on social networks.

“Because when posting like this, many people sometimes don’t fully understand, maybe even many people will misunderstand that she gave this and that content, but if in the whole lecture series, I can understand that the slide carries the message. what”.

Thanh Hung