IB選課規(guī)則及課程輔導(dǎo)！
三大國(guó)際課程體系內(nèi)AP，ALEVEL，IB課程中，IB體系無(wú)疑是全球公認(rèn)最難的國(guó)際課程體系之一，所以選課就尤為重要了，特別是在進(jìn)入IBDP階段。選課這關(guān)沒(méi)把好，會(huì)直接影響到IB大考的分?jǐn)?shù)和申請(qǐng)結(jié)果。那么申英VS申美，I...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記2.2.1 Linear Combinations of Random Variables
aX+b How are the mean and variance of?X?related to the mean and variance of?aX + b? If?a?and?b?are?constants?then the following results are true E(aX + b) = aE(X) + b Var(aX + b) = a2?Var(X) Note t...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記2.1.1 The Poisson Distribution
Properties of Poisson Distribution What is a Poisson distribution? A Poisson distribution is a?discrete probability distribution What are the important properties of a Poisson distribution? The?mea...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記1.2.3 Confidence Intervals
Confidence Interval for μ What is a confidence interval? It is?impossible?to find the?exact value?of a population parameter when taking a sample The best we can do is find an?interval?for which the...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記1.2.2 Distribution of Sample Means
Sample Mean Distribution What is the distribution of the sample means? For any given population it can often be difficult or impractical to find the true value of the?population mean,?μ The populat...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記1.2.1 Unbiased Estimates
Unbiased Estimates What is an unbiased estimator of a population parameter? An?estimator?is a?statistic?that is used to estimate a?population parameter When a sample is used with the estimator, the...
CIE A Level Maths: Probability & Statistics 2復(fù)習(xí)筆記1.1.1 Sampling & Data Collection
Sampling Techniques What is a population, a sample and the difference between them? The?population?refers to the?whole set?of things which you are interested in e.g. if a vet wanted to know how lon...
CIE A Level Maths: Probability & Statistics 1復(fù)習(xí)筆記3.4.2 Normal Approximation of Binomial
Normal Approximation of Binomial When can I use a normal distribution to approximate a binomial distribution? Why do we use approximations? If there are a large number of values for a binomial dist...
CIE A Level Maths: Probability & Statistics 1復(fù)習(xí)筆記3.4.1 Modelling with Distributions
Modelling with Distributions When should I use a binomial distribution? A random variable that follows a?binomial distribution?is a?discrete random variable A binomial distribution is used when the...
