Standard Normal Distribution What is the standard normal distribution? The standard normal distribution is a normal distribution where the mean is 0 and the standard deviation is 1 It is denoted b...
Properties of Normal Distribution The binomial distribution is an example of a discrete probability distribution. The normal distribution is an example of a continuous probability distribution. Wha...
Properties of Geometric Distribution What is a geometric distribution and its notation? A geometric distribution is a discrete probability distribution Each trial has only two outcomes Broadly labe...
众所周知，国际化学学术活动的经历可以帮助大家充分展现自己对化学的兴趣和热情，尤其在申请化学、制药、分子科学等相关领域占据优势。而随着USNCO美国化学奥赛取消中国考点，知名度和含金量兼具的化学学术活动屈...
Calculating Binomial Probabilities Where does the formula for a binomial distribution come from? The formula allows statisticians to quickly find probabilities for larger values of n without needin...
Properties of Binomial Distribution What is a binomial distribution? A binomial distribution is a discrete probability distribution The discrete random variable X follows a binomial distribution if...
E(X) & Var(X) (Discrete) What does E(X) mean and how do I calculate E(X)? E(X) means the expected value or the mean of a random variable X For a discrete random variable, it is calculated by: L...
Discrete Random Variables What is a discrete random variable? A random variable is a variable whose value depends on the outcome of a random event The value of the random variable is not known unti...
Probability Formulae What is meant by probability formulae? If you have seen any of the other Revision Notes on probability, almost every one contains a formula These however are often disguised in...
Further Venn Diagrams What do you mean by further Venn diagrams? The Venn diagrams used here are no more complicated than those in the first Venn Diagrams revision note, however questions may use s...
Further Tree Diagrams What do you mean by further tree diagrams? The tree diagrams used here are no more complicated than those in the first Tree Diagrams revision note, however more detailed use o...
Set Notation What is set notation? Set notation is a formal way of writing groups of numbers (or other mathematical entities such as shapes) that share a common feature – each number in a set is ca...
