概率（Probability）的本质是什么？ - 知乎 TA一脸恹恹地跟你说：这其实是一个非常深刻的哲学问题，一般被称作“概率的解释（interpretations of probability）”。“概率”这个在日常对话中看起来无害的概念，实际上会带来非常严重基础性问题。
probability - What is the difference between independent and mutually . . . $\begingroup$ @Anwar "Yes, that's fine" is the wrong answer to your question because it is not correct to say the "knowledge of the probability" changes the probability that an event happens The "knowledge of the probability" never changes anything The occurence of an event changes the probability as Graham explains in his answer $\endgroup$
probability - What is the difference between Average and Expected value . . . So the probability of team A winning is $\frac 78$, and the expected value of team A to receive is $\frac 78 \cdot 24 \text{ ducats } = 21 \text{ ducats }$ So the fair division if the game was not interrupted would be $3$ ducats to team B and to team A $21$ ducats So this opened up the possibility of mathematicians predicting the future
probability - SOA sample question: Conditional Variance - Mathematics . . . Since I only have one content left to pick, the situation is now a Bernoulli trial with a probability $15 27$ of success Thus the variance would be $15 27-(15 27)^2 = 2469$ The solution to the problem is given: While I follow the solution, I don't understand why my approach is incorrect