1. independence, from the definition, P(AB)=P(A)P(B), what is it in practical sense? I understand that the occurrence of two things does not affect each other, and well water does not interfere with each other, but how to judge whether they are related? take for example
A = [x 1+(x 1+x2)/2], b = [x2+(x 1+x2)/2], x 1 and x2 are independent of each other, so are A and B independent of each other?
If not, then why are the sample mean and sample variance in the chapter of sample and sample distribution independent of each other? They don't all contain Xi.
The combination and arrangement of probability theory and mathematical statistics, calculus and interval estimation.
Do you have a master's degree in probability theory and mathematical statistics? Please leave a QQ. 5255306 14.
How to learn probability theory and mathematical statistics! :James cheng . blog . hexun ./4367536 _ d。
Look at this, you will love learning! I just can't read the book, and then I watched the slides used by the teacher in class before I passed the mathematical statistics!
How did probability theory and mathematical statistics pass the college examination? Teachers usually focus on the key points. It is estimated that all the key and difficult points mentioned by the teacher in class will be tested. If the teacher understands them, it is estimated that they will pass.
Is it necessary to take the joint exam of probability theory and mathematical statistics? Depending on whether you take the exam or not, you must take the exam if you count three, and you will not take the exam if you count two, and the scope of the exam is different.
What are the thinking methods of probability theory and mathematical statistics? 1. You can take the self-study exam for undergraduate students and become a second major. Although I haven't graduated yet, there is no problem as long as I finish my studies at school and get a diploma before applying for a self-taught undergraduate thesis. 2. With the above status, you can avoid taking undergraduate political courses and public courses with the same requirements, such as mathematics, foreign languages and computers. I suggest you find out if there are any regulations about borrowing exams in your province. Some provinces stipulate that you can't get scores from other provinces in the provincial examination, otherwise it is called borrowing, and borrowing points is invalid. Second, it is very troublesome to go to other provinces for exams, and it is a problem to stay back and forth. Suggest careful consideration. You can apply in the study room of our school, or you can apply to the county-level education bureau with your ID card. Of course, you can also go back to Hubei to apply for the exam, or apply for it in any province, but it is not convenient to apply for the exam and take the exam. Moreover, if you apply in Henan Province, you can transfer to Hubei Province to take .0021Advanced Mathematics (II) in the future. It has been divided into two courses: linear algebra, probability theory and mathematical statistics, which are taken in all provinces. If the courses you study in the university are the same as the courses you teach yourself, and the credits are the same or higher, you can apply for exemption. The courses you checked in this province refer to the examination courses arranged this year, but some courses will be taken next year, so the Ministry of Education shall prevail. 1 and 2. You don't need to show any proof to take the self-study exam. You only need to provide materials when applying for graduation. The examination plans of each province are different. According to the examination plan of this province, you can borrow from other provinces, and you need to go through the transfer formalities after the examination. You can take the self-study exam in any province at the same time.
How to calculate C (3,4) = 4 in probability theory and mathematical statistics! /3! * 1! =4 C(k，n)=n！ /k！ (n-k)！ Attention: n! =n*(n- 1)*(n-2)....* 1
If you remember it, you can divide it into slightly larger classes (slightly smaller classes multiplied by difference classes)
Ask a small question of probability theory and mathematical statistics ~ ~ ~ ~ ~ ~ Because t( 10) is symmetric about x=0,
So 0.95 = p (t
Look-up table c=- 1.8 125
You want to ask why the second step is?
I can only say:
Draw it yourself-_-!
Is anyone reviewing probability theory and mathematical statistics? I'm going crazy. I want to find a partner for postgraduate study. Although probability theory is not a great god, the topic is at least basic. Need m consultation