加州大学公布2022年新生录取数据，国际生录取不容乐观！
作为备受中国学生关注的加州系大学，近日刚刚更新了2022新生录取数据。在各个学校申请形式都不容乐观的情况下，UC系统最新公布的数据也十分让人堪忧。 数据再次显示，UC已经启动大幅转向，对于外州/国际学生，从...
CIE A Level Maths: Pure 1复习笔记1.1.1 Expanding Brackets
Expanding Quadratics You should be familiar with all aspects of basic algebra including manipulating expressions; simplifying; expanding and factorising brackets with both linear and quadratics. I...
CIE A Level Maths: Probability & Statistics 2复习笔记3.3.1 Normal Hypothesis Testing
Normal Hypothesis Testing What steps should I follow when carrying out a hypothesis test for the mean of a normal distribution? Following these steps will help when carrying out a hypothesis test f...
CIE A Level Maths: Probability & Statistics 2复习笔记3.2.2 Poisson Hypothesis Testing
Poisson Hypothesis Testing How is a hypothesis test carried out for the mean of a Poisson distribution? The population parameter being tested will be the mean, λ , in a Poisson distribution As it i...
CIE A Level Maths: Probability & Statistics 2复习笔记3.2.1 Binomial Hypothesis Testing
Binomial Hypothesis Testing How is a hypothesis test carried out with the binomial distribution? The population parameter being tested will be the probability, p in a binomial distribution B(n , p...
CIE A Level Maths: Probability & Statistics 2复习笔记3.1.2 Type I & Type II Errors
Type I & Type II Errors Any hypothesis test will only provide evidence about whether a parameter has changed or not. A conclusion can not claim with certainty whether to accept or reject the nu...
CIE A Level Maths: Probability & Statistics 2复习笔记3.1.1 Hypothesis Testing
Language of Hypothesis Testing What is a hypothesis test? A hypothesis test uses a sample of data in an experiment to test a statement made about the value of a population parameter A hypothesis te...
CIE A Level Maths: Probability & Statistics 2复习笔记2.4.2 Approximations of Distributions
Normal Approximation of Poisson When can I use a normal distribution to approximate a Poisson distribution? The greater the value of λ in a Poisson distribution, the more symmetrical the distributi...
CIE A Level Maths: Probability & Statistics 2复习笔记2.4.1 Choosing Distributions
Choosing Distributions When should I use a Poisson distribution? A random variable that follows a Poisson distribution is a discrete random variable A Poisson distribution is used when the random v...
